Betting Glossary

The standard three-way football betting market: 1 = Home Win, X = Draw, 2 = Away Win.

A hockey market including regular time only — home win, draw (after 60 minutes), or away win — without extra time or shootout.

An accumulator combining four selections where all must win; winnings roll from one leg to the next.

An accumulator with five selections, all of which must win to collect the full payout.

An accumulator combining six selections; all must win for a return.

A hockey market settling after 60 minutes of regulation play only, excluding overtime and shootout.

A seven-selection accumulator where every leg must win.

An eight-selection accumulator with high-risk, high-reward potential.

A percentage increase in accumulator winnings, rewarding bettors who build multi-leg bets.

A promotion refunding the stake (usually as a free bet) if one leg of an accumulator loses.

The practice of maintaining multiple bookmaker accounts to access the best odds and promotions across the market.

When a bookmaker limits the stakes or markets available to a profitable bettor, typically without explanation.

A single bet combining four or more selections where all must win for the bet to pay out.

An extra percentage added to accumulator winnings based on the number of legs or the total return.

A single selection within an accumulator; each leg must win for the accumulator to pay out.

The total number of aces served in a match; a popular in-play and pre-match market.

Two if-bets in both directions — ensuring both selections are wagered if either wins, regardless of which resolves first.

A compulsive pattern of gambling behaviour that persists despite negative consequences; a recognised mental health condition.

The record of a team or bettor in relation to the point spread, as opposed to the straight win/loss record.

The process by which gambling operators confirm that customers are of legal gambling age before allowing access.

The combined score from two legs of a knockout tie; bets on this market consider both matches together.

An Asian Handicap giving the underdog a half-goal start; they win the bet if they win or draw the match.

An Asian Handicap with no goals advantage given to either team; the stake is refunded if the match finishes level.

A 26-bet combination on six selections comprising two Patents and a double on the winning Patent combinations.

Additional handicap lines beyond the main spread, allowing bettors to choose more favourable or less favourable lines at adjusted odds.

Additional over/under lines beyond the main total, allowing bettors to choose adjusted lines at different odds.

The US standard odds format expressed as a positive or negative number relative to a $100 unit, showing how much you win (+) or must stake (-) to win $100.

Regulations requiring gambling operators to monitor and report suspicious financial activity to prevent money laundering.

A bet placed well in advance of an event, before the final field or runners are confirmed.

A bet placed well in advance of an event, often at attractive odds but usually with no refund if the selection is withdrawn.

An ante-post bet that loses its stake if the selection is withdrawn before the event, unlike same-day non-runner rules.

A bet on a player to score at any point during the match, regardless of time or order.

A market betting on a player to score at any point during a match, regardless of whether they score first or how many goals they score.

A market on whether a specific player will score a touchdown at any point during the game.

A market on whether a specific player will score a try at any point during the rugby match.

Short form of arbitrage — betting on all outcomes of an event across bookmakers to lock in a guaranteed profit.

Arbitraging between a bookmaker and a betting exchange to lock in a guaranteed profit.

Placing bets on all outcomes of an event across different bookmakers to guarantee a profit regardless of the result.

A tool determining stakes across multiple bookmakers to guarantee a profit from a sure bet.

A form of handicap betting that eliminates the draw by giving one team a goal start or deficit, expressed in whole, half, or quarter goals.

A collective term for odds formats and markets popular in Asian betting markets, including Asian Handicap and quarter-ball lines.

An over/under market using quarter-ball lines (e.g., 2.25 or 2.75) that split stakes between two adjacent totals.

A market on the number of assists a player will record in a match or season.

A team's record against the point spread — wins, losses, and pushes — used to evaluate betting performance.

A preset trigger that automatically cashes out a bet when the return reaches a specified amount.

The mean odds level across all bets in a tracked record, used alongside yield for full performance assessment.

A team's recent results and statistics when playing away from home.

football-specific

A card game where players bet on whether the player or banker hand will be closer to 9; popular in Asian markets.

A bet placed in favour of a selection winning — the standard bet type available at both bookmakers and betting exchanges.

A strategy of consistently backing the shortest-priced selection in a market.

The price available for a bettor to back a selection on an exchange.

A trading strategy where you back a selection at longer odds first, then lay it at shorter odds as the price falls.

When a team plays two games on consecutive nights, often leading to fatigue and reduced performance.

The reserve quarterback who plays if the starter is injured; a significant factor in last-minute line movement.

A set won 6-0, also known as a bagel due to the resemblance of the zero to the shape of a bagel.

A selection considered almost certain to win, used as the backbone of combination bets like Trixies or system bets.

The total amount of money a bettor has set aside exclusively for betting, managed separately from everyday finances.

The practice of controlling bet sizes and protecting the total betting fund to ensure long-term survival and growth.

A market on the combined points scored by both teams in a basketball game.

A UK charity raising awareness about gambling harm and providing resources for problem gamblers.

A bookmaker promotion where you receive the starting price if it is higher than the odds you took when placing the bet.

A promotion paying the higher of your taken price or the SP if the SP is greater at race time.

The format of a tennis match; Grand Slams use best-of-5 for men, affecting totals and handicap markets.

An agreement between a bettor and a bookmaker where money is risked on the outcome of an event.

A promotional token that enhances the odds of a single selection by a set amount or percentage.

A bookmaker tool that lets you combine multiple selections from the same match into a single bet with multiplied odds.

Promotional currency credited to an account that can be used to place bets but not withdrawn as cash.

Placing any bet while an event is actively happening; broadly synonymous with in-play and live betting.

The process of determining the optimal amount to wager on each bet based on edge, odds, and bankroll.

Recording every bet placed — including stake, odds, result, and profit — to analyse performance over time.

A promotion structure where placing a qualifying bet triggers a reward, such as a free bet or bonus.

The world's largest peer-to-peer betting exchange, owned by Flutter Entertainment, where bettors can back and lay outcomes with each other.

The application of data science and statistical analysis to sports betting, covering performance tracking and predictive modelling.

A peer-to-peer platform where bettors bet against each other rather than against a bookmaker, with the exchange earning commission on winnings.

A diversified collection of betting strategies and markets managed like an investment portfolio to reduce risk.

A bet that settles at either 0 (lost) or 100 (won), with no spread element; similar to a fixed-odds win/lose bet.

A card game where players aim to reach 21 or beat the dealer without exceeding it; one of the lowest house edges in casinos.

Exploiting bookmaker promotions beyond their intended use, often leading to account restrictions.

A promotional credit awarded by a bookmaker, similar to a free bet but sometimes with slightly different terms.

A special feature within a slot or casino game triggered by specific symbols, offering free spins, pick games, or guaranteed payouts.

A market where yellow cards score 10 points and red cards score 25; bets placed on whether the total exceeds a quoted line.

A licensed company or individual that accepts bets on sporting events and other outcomes, setting odds and paying out winning bets.

An accumulator offered at enhanced odds compared to the standard combination price.

A market on a specific team scoring at least once in both the first and second halves.

A market betting on whether both teams will score at least one goal in the match (Yes or No).

Backing the negative outcome of the BTTS market — at least one team will fail to score.

Alternative name for the BTTS market — betting on whether both teams will each score at least one goal in the match.

A straight market on which of two fighters will win a scheduled bout.

When a player scores exactly two goals in a single match.

A set won 6-1 in tennis, named informally after the bagel — both representing one-sided set outcomes.

When the receiving player wins a game on the opponent's service, a key event that affects game momentum.

A market betting on whether both teams will score at least one goal each during a match.

A refund offer when backing Both Teams to Score if the bet loses due to one team failing to score.

A feature allowing bettors to combine multiple markets from the same fixture into one personalised bet at a custom price.

A National Hunt Flat race (NHF) with no obstacles for horses that will eventually race over jumps.

In spread betting, placing a bet that profits if the result is higher than the quoted spread.

A game-winning shot made as or just before the buzzer sounds, often dramatically changing in-play markets.

Also called a Super Yankee; a 26-bet combination on five selections covering all doubles, trebles, 4-folds, and one 5-fold.

A handicap applied to the cards market; one team is given a head start in terms of cards received.

A feature allowing you to settle a bet before the event finishes, receiving a portion of the potential winnings in exchange for closing the bet early.

A promotion refunding a percentage of net losses over a defined period, often as bonus credit.

A seal of approval from an independent testing agency confirming that a casino game's outcomes are genuinely random.

The fourth and fifth rounds of a five-round fight; only contested in title fights or main events.

The premier jump racing festival in the UK, held over four days in March with 28 Grade 1 events.

The quality level of a race, from Group/Grade 1 (top level) to lower-grade or selling races; horses typically perform within their class.

A market betting on a team to not concede any goals during a match.

The final odds available just before an event begins, regarded as the most efficient reflection of the true probability.

A measure of a bettor's skill calculated by comparing the odds they obtained to the final odds available before an event, with consistently beating the closing line indicating positive edge.

The final price available on a selection just before an event begins; considered the most accurate market estimate.

Any bet covering multiple permutations of selections, such as Trixies, Yankees, and system bets.

Multiple straight forecasts covering all possible first and second combinations from more than two selections.

All possible tricasts from a selection of runners, covering every permutation of first, second, and third finishers.

Promotions applying to bets covering multiple markets or events simultaneously, such as SGP boosts.

Pre-built combinations of multiple markets within a single event offered by a bookmaker under one price.

The fee charged by a betting exchange on net winnings from a market, typically 2-5%.

The league, tournament, or series within which events take place.

A race where entry is based on specific criteria such as age, sex, or prior winnings rather than a weight handicap.

An outright market on which F1 team will win the manufacturers' world championship.

The percentage of clear-cut chances or shots a player or team converts into goals.

A mandatory or voluntary pause during which a player cannot modify or remove responsible gambling limits.

A temporary break from gambling activity, during which a player cannot access their account.

A handicap market applied to corners rather than goals, giving one team a head start in the corners tally.

A market on the number of corner kicks taken in a match, often expressed as over/under or handicap.

A boxing market predicting the exact round grouping in which the fight will end.

A market betting on the exact final score of a match, offering high odds due to the difficulty of predicting a specific scoreline.

An accumulator combining multiple correct score predictions across different matches.

Using a specific correct score prediction as a certain selection within a combination or acca bet.

A market predicting the exact set score of a tennis match (e.g., 2-0 or 2-1).

A shot attempt metric counting all directed shots (on goal, missed, and blocked) used to measure territorial dominance.

When a team wins by more than the point spread (or loses by fewer points than the spread for the underdog).

Betting on cricket matches including series winner, next wicket, top batsman, and run totals markets.

Placing bets using cryptocurrency such as Bitcoin or Ethereum as the deposit and withdrawal method.

A staking system where the bet is increased by one unit after a loss and decreased by one unit after a win.

A free bet offered every day as part of an ongoing loyalty or promotional scheme.

Betting on professional darts matches covering markets such as match winner, set handicap, and 180s count.

A betting approach based entirely on statistical analysis and model outputs rather than intuition or opinion.

A pause in play where the ball is stationary and a free kick, penalty, corner, or throw-in restarts the game.

When two or more competitors finish in an equal position, resulting in winnings being divided proportionally by the number of tied participants.

The European format for expressing odds as a single number representing the total return per unit staked, including the stake itself.

Ball carries or passes that enter the opposition's final third, measuring direct attacking intent.

The front players on defence who rush the passer and stop the run; crucial to under bets.

Points allowed per 100 possessions, reflecting a team's defensive efficiency.

A team's statistical track record at the back — goals conceded, clean sheets, and xGA — used to assess clean sheet chances.

A promotion matching a percentage of the first (or subsequent) deposit up to a maximum amount.

A voluntary control allowing a bettor to cap the amount they can deposit into a gambling account per day, week, or month.

When a driver fails to complete a race due to a mechanical failure, crash, or retirement.

A single bet combining two selections where both must win; the winnings from the first selection roll onto the second.

A market combining two of the three possible 1X2 outcomes into a single bet, reducing risk at the cost of shorter odds.

Covering two of the three 1X2 results in one bet at lower odds than a single selection.

When a player records double digits in two statistical categories in one game.

A market on the total number of double faults served during a match.

A forecast bet combining two separate races, needing the correct 1-2 in both races to win.

Another name for the half-time/full-time market, predicting the leader at half-time and the final result.

The starting stall or barrier position assigned to a horse in a flat race; can significantly affect performance.

A market where your stake is refunded if the match ends in a draw, effectively removing the draw outcome from a two-way win/lose bet.

A market where the draw outcome returns the stake; equivalent to Asian Handicap 0.

The decline in bankroll from a peak to a subsequent trough, reflecting the pain of losing runs.

When odds lengthen (become larger) over time, indicating the market believes the selection is less likely to win.

An outright bet on which driver will win the Formula 1 Drivers' World Championship at the end of the season.

A system allowing trailing drivers to open their rear wing for higher straight-line speed, increasing overtaking probability.

Spreading stakes across multiple selections in the same event so that the same profit is made whichever selection wins.

A tool calculating the optimal stakes to spread across multiple selections for equal profit on any winner.

Using a betting exchange to spread stakes across multiple selections in the same event for equal profit.

Defense-adjusted Value Over Average — a comprehensive NFL metric measuring team efficiency relative to league average.

A digital payment method such as PayPal, Skrill, or Neteller used to fund and withdraw from betting accounts.

A bet split into two equal parts: one on the selection to win and one on the selection to finish in a specified place, at a fraction of the win odds.

An accumulator where each leg is bet each-way, with both the win and place parts of each leg rolling onto the next — paying out if any selection places, not just wins.

A two-part bet of equal stakes on a selection to win and to place; common in horse racing and golf.

Splitting a stake across multiple each-way selections to ensure a profit if any one finishes in the places.

A bookmaker promotion offering additional place terms on selected races, typically doubling the standard number of places.

The conditions specifying the number of places paid and the fraction of win odds paid for place bets.

Identifying races where bookmakers' each-way place terms are more generous than the implied place probabilities.

A feature allowing bettors to settle a bet before the event finishes, locking in a profit or limiting a loss.

The first line posted by oddsmakers for an NFL game, often released days before the market matures.

A promotion paying out winning bets early if a specific trigger condition is met, regardless of the final result.

Odds taken well before race time, often the previous evening, locking in a potentially longer price.

The mathematical advantage a bettor holds over the bookmaker on a given bet, expressed as a percentage of expected profit relative to the stake.

A feature allowing bettors to add, remove, or swap selections on an existing bet before the event starts.

A numerical rating system assessing team or player strength based on match results, commonly applied to sports modelling.

A goal scored into an unguarded net after the trailing team has pulled their goaltender for an extra attacker.

A promotion offering more places or better fractional odds for the place portion of an each-way bet.

Odds improved above the standard market price, usually as a promotional offer by a bookmaker.

Betting on competitive video game tournaments covering CS2, Dota 2, League of Legends, and Valorant.

A three-way handicap market (including a draw option) where a goal start is applied to one team before kick-off.

Odds of exactly 1/1 (fractional) or 2.00 (decimal) — the stake equals the potential profit.

The sporting contest or occurrence on which a bet is placed.

The percentage fee deducted from net winnings on Betfair, starting at 5% and varying by market and customer.

Odds available on a peer-to-peer betting exchange, often better than bookmaker odds due to lower margin.

A measure of the probability that a pass or action will result in a goal, beyond simple assist counting.

A statistical metric quantifying the quality and quantity of chances created, predicting how many goals a team or player should score.

A model-based estimate of how many points a team should have accumulated based on match xG, rather than actual results.

The long-run average profit or loss per bet unit, calculated from the true probability and the offered odds.

The average profit or loss per bet calculated by multiplying each possible outcome by its probability and summing the results.

Sizing bets based on the calculated expected value rather than a fixed percentage of the bankroll.

A promotion paying the place element of an each-way bet on an additional finishing position beyond standard terms.

Two 15-minute periods added to a match if the score is level after 90 minutes in a knockout competition.

The proportion of faceoffs won by a player or team, influencing puck possession at key moments.

Betting against the popular public side when the line has been inflated by recreational money.

Betting against public overreactions to recent results, such as backing a team after an unsually bad run.

Odds that exactly reflect the true probability of an event, with no margin applied in either direction.

Markets where payouts are based on the aggregated fantasy-point performance of players, bridging DFS and traditional betting.

A market on which driver will record the fastest lap time in a Formula 1 race.

The selection with the shortest odds in a market, regarded as the most likely outcome.

The empirical tendency for bookmakers to overprice favourites relative to longshots in their margins.

A shot attempt metric similar to Corsi but excluding blocked shots, used to assess scoring zone activity.

A staking progression system based on the Fibonacci sequence, increasing stakes after losses and returning to the start after a win.

A staking system based on the Fibonacci sequence where each stake is the sum of the previous two after a loss.

A market on the number of field goals in an NFL game or whether a specific kicker will make/miss one.

Any proposition bet specific to a combat sports event beyond winner, method, or rounds.

A market on whether a fight will last all scheduled rounds without a stoppage.

A straight bet on which fighter will win the bout, with no method or round specified.

A market on which player will score the opening basket of a basketball game.

A market on which player will score the opening goal in a hockey game.

A market betting on which player will score the first goal in a match.

A point spread or total covering only the first two quarters of an NFL game.

A market on the outcome of only the first 45 minutes of a match.

A market on which driver will be first to retire from a race due to a mechanical failure or accident.

A golf betting market on which player will have the lowest score after the first round of a tournament.

The proportion of first serves that land in the service box; high percentage reduces vulnerability to breaks.

A market on which player wins the opening set of a tennis match.

A market on which side will open the scoring in a match.

A market on which player will score the first touchdown of an NFL game.

A market on which player will score the first try of a rugby match.

The total goals scored before half-time in a match; an active market driven by team-specific half-time tendencies.

The strongest selection placed first in a sequential or combination bet to protect the rest of the stake.

Analysing performance data separately for each half to find patterns in scoring or conceding.

A bet where the odds are agreed and locked in at the time of placing, regardless of how the market moves before the event.

Betting the same absolute amount on every bet regardless of odds or confidence level.

A scheduled match or sporting event on which bets can be placed, particularly in football.

A 23-bet combination on four selections: six doubles, four trebles, one 4-fold, and two single-stakes-about pairs.

A staking approach where the same fixed amount is wagered on every bet, regardless of confidence level, odds, or bankroll size.

Racing on a flat course without jumps; typically faster-paced and form-based than jump racing.

A bet on the first and second finishers in a race or event; available as straight, reverse, or combination.

A record of a horse's (or team's) recent performances, used to assess fitness and current ability.

A league table ranked by recent form (usually last 5 or 6 games) rather than overall season record.

When a key player accumulates personal fouls early, limiting their court time and affecting team performance.

The traditional British format for expressing odds, showing profit relative to stake as a fraction (e.g. 5/1 means £5 profit per £1 staked).

A promotional bet funded by the bookmaker where your stake is not risked — you keep only the winnings, not the stake itself, if the bet wins.

A dead-ball restart awarded for a foul; a source of goals especially for set-piece specialists.

Complimentary spins on a slot machine awarded as part of a bonus round or promotional offer.

A market on whether a driver will qualify in the top two positions (pole or second on the grid).

The outcome of a match determined by the score at the final whistle of the standard playing time.

A prop bet on whether a fumble will occur and/or be lost by a specific player or team.

Bets placed on outcomes determined at some point in the future, such as a league winner, championship, or season-long awards.

A long-term bet on the outcome of a season, competition, or award result that will be settled at a future date.

An international online support service offering free counselling and peer support for problem gamblers.

A UK charity providing support, information, and counselling for those affected by problem gambling.

Bets on specific occurrences within an NFL game not directly tied to the final score or spread.

A live casino format based on television game shows, combining casino betting with entertainment elements.

The percentage by which different games contribute toward wagering requirements; slots typically contribute 100%, table games less.

A tennis market where one player receives a games head start across the entire match.

A free UK self-exclusion scheme allowing gamblers to restrict their access to all UKGC-licensed online betting sites.

The application of General Data Protection Regulation principles to gambling operators, governing how customer data is stored and used.

An intense pressing tactic pioneered by Jürgen Klopp involving immediate pressure on the ball upon losing it.

The Gemeinsame Glücksspielbehörde der Länder — the joint German states gambling authority overseeing licensing since 2021.

hockey-specific

The average number of goals scored or conceded per match, used to parameterise over/under models.

The quoted number of goals around which over/under markets are set; can also refer to the aggregate goals in a match.

A refund if your first goalscorer bet loses because the selected player scored but not first.

An enhanced price on a named player to score at any time during a match.

Performance metrics for a goalkeeper including saves, goals against average, and save percentage.

The condition of a horse racing track surface, ranging from Firm to Heavy, affecting race times and horse performance.

The award given to the top scorer of a major tournament or league; also the betting market for that outcome.

Betting on professional golf covering tournament winner, top-10, head-to-head, and hole-in-one markets.

A full-cover bet on eight selections comprising 247 bets: 28 doubles, 56 trebles, 70 four-folds, 56 five-folds, 28 six-folds, 8 seven-folds, and 1 eight-fold — no singles.

The most famous jump race in the world, run over 4 miles 2 furlongs with 30 fences at Aintree.

One of the four major tennis tournaments: Australian Open, French Open, Wimbledon, and US Open.

Laying off a back bet on an exchange after odds have moved in your favour, distributing profit across all outcomes.

Achieving a position on a betting exchange where all outcomes show a profit by trading off your initial bet.

A market on the exact or top-N starting position of a driver for the race.

When a bookmaker restricts a matched bettor's account to prevent them from benefiting from promotions.

A market restricted to the first or second half of a basketball or football game.

An over/under goals market for only the first 45 minutes of the match.

A market on the score or winning team at the end of the first 40 minutes of a rugby union or league match.

A bet predicting both the half-time result and the full-time result of a match.

A betting market that gives a virtual advantage or disadvantage to a team or player to level the playing field and create a more balanced two-way market.

A points start given to the underdog to level the betting market; the favourite must win by more than the handicap.

A quarter-ball Asian Handicap splitting the stake between AH 0 and AH +0.5, partially refunding on a draw.

A three-quarter ball Asian Handicap splitting the stake between AH +0.5 and AH +1.

A broad betting category that applies a virtual advantage or disadvantage to level the playing field between unevenly matched competitors.

The odds attached to a handicap market after the head start or deficit has been applied.

A race where horses carry different weights based on their official rating to give each competitor an equal chance of winning.

A performance metric assigned to a team or player indicating their approximate points/goals superiority over an average competitor.

A bet on the winner of an event after applying the handicap; used in golf, snooker, and darts.

A person or system that assigns point spreads or weights to level competition in a market or race.

When a player scores three goals in a single hockey game, triggering hat throws from the crowd.

When a player scores three goals in a single match.

A market on which of two specified competitors will perform better in a contest or over a period.

A market on which of two specified drivers will qualify in a higher position in the same session.

A market on which of two specified drivers will finish ahead of the other in the race.

Placing additional bets on different outcomes to reduce risk or lock in profit from an existing bet.

A full-cover bet on six selections comprising 57 bets: 15 doubles, 20 trebles, 15 four-folds, 6 five-folds, and 1 six-fold — no singles.

A defensive/offensive tactic where a team presses the opposition in their own half to force mistakes and win the ball high up the pitch.

Expected Goals adapted for ice hockey, measuring shot quality based on location, angle, and type.

The statistical benefit of playing at home, manifesting in higher win rates and better form.

A team's historical performance split between home and away games, used to assess context-specific value.

Odds that show only the profit per unit staked (decimal odds minus 1), popular in Asian markets.

The statistical advantage a casino holds over the player, expressed as a percentage of each bet.

A jump racing discipline where horses clear lower, brush-type obstacles; a stepping stone to steeplechasing.

A series of bets where the second only comes into action if the first wins; protects the bankroll if the first bet loses.

The probability of an outcome suggested by the betting odds, calculated by converting the odds to a percentage.

Placing bets on an event while it is in progress, with odds updating continuously to reflect the current state of play.

Placing bets during a live event as the action unfolds, with odds updating in real time.

Cashing out a bet during the live event rather than before it starts.

A feature allowing bettors to modify an existing accumulator mid-game by removing a losing leg for a fee.

When a bookmaker temporarily pauses in-play betting markets due to a key event or technical issue.

Value opportunities created when bookmakers update live odds too slowly after a key match event.

An animated or graphical representation of a live game within the bookmaker app, showing attacks, possession, and events.

Betting exchange activity during a live event, where positions are opened and closed as odds fluctuate.

Odds shown in a format similar to American odds but expressed per unit stake rather than per 100.

Information about player availability or fitness that can materially affect betting prices.

Goals scored in the added minutes at the end of each half, often creating dramatic market swings in-play.

A prop on whether a quarterback will throw an interception or a defender will record one.

Industry Starting Price — a computerised SP calculated from bookmaker prices, used when no official SP is returned.

The licensed rider who steers and controls a horse during a race.

American term for the bookmaker's commission embedded in the odds — equivalent to vigorish or margin.

Odds with no margin applied — a fair market price where implied probabilities sum to exactly 100%.

Racing over obstacles including hurdles and fences; also known as National Hunt racing in the UK.

An instruction on Betfair to keep any unmatched portion of a bet active in the queue after the event starts.

A mathematical formula that calculates the optimal percentage of your bankroll to stake on a bet, based on the size of your edge and the odds.

A modified version of the Kelly Criterion using a fraction (e.g., half-Kelly or quarter-Kelly) to reduce volatility.

A fighter renowned for finishing opponents by KO/TKO, making method of victory markets particularly relevant.

Regulatory checks requiring gambling operators to verify the identity of customers to prevent fraud and money laundering.

A cancellation staking system using a sequence of numbers; the stake is the sum of the first and last number in the sequence.

A market on which team will score the final goal of the match.

A bet on which player will score the final goal of a match.

Betting against a selection on a betting exchange, acting as the bookmaker and accepting another bettor's back bet.

An exchange strategy of laying the shortest-priced selection, effectively betting they will not win.

A tool calculating the maximum loss (liability) when laying a selection on a betting exchange.

The price at which a layer on an exchange is prepared to accept liability; the odds a bettor pays to back.

An exchange trading strategy where you lay the draw before kick-off and back it at shorter odds if it stays 0-0 in-play.

An exchange strategy of laying every runner in a race at a price before the start, aiming to trade out for a profit.

Laying every runner or team in a market before the event, typically in horse racing just before the off.

A trading strategy where you lay a selection first at shorter odds, then back it at longer odds if the price drifts.

The mean number of goals per game across a specific league, used to calibrate over/under and BTTS models.

The maximum amount a layer on a betting exchange stands to lose if the selection they laid wins.

The different categories of gambling licence — operator, personal management, software — issued by regulators.

The spread, total, or odds set by a bookmaker to attract balanced action on both sides of an event.

When odds stop moving despite continued betting action, suggesting sharp money on both sides balances out.

The change in betting odds or point spread from opening to closing, reflecting shifts in betting action, new information, and market forces.

Comparing odds across multiple bookmakers to find the best available price before placing a bet.

Value found by identifying odds that are better than the true probability, typically by comparing multiple markets.

A process or tool comparing your predicted price against multiple bookmakers to identify the best value bets.

The total amount of money available to be matched in an exchange market; high liquidity means faster matching.

Another term for in-play betting — wagering on markets that are open during the course of a sporting event.

A real-time casino experience streaming a human dealer operating physical table games to players online.

The constantly updating odds available during a basketball game, reflecting the current score and game situation.

A real-time in-platform tool showing current match scores and events to support in-play betting decisions.

A feature within a bookmaker's platform allowing users to watch live sporting events directly linked to betting markets.

A bet that will not be settled until the end of a season, tournament, or extended competition.

A selection with very long odds considered highly unlikely to win, but offering a large potential return.

The amount of money forfeited when a bet does not win; equal to the stake placed.

A responsible gambling tool capping the amount a bettor can lose within a specified time frame.

A defensive setup where a team sits deep in their own half, prioritising shape and compactness over pressing.

A rewards scheme where bettors earn points or credits based on activity, redeemable for free bets or prizes.

A full-cover bet on four selections comprising 15 bets: 4 singles, 6 doubles, 4 trebles, and 1 four-fold — returns something from a single winner.

A full-cover bet on five selections comprising 31 bets: 5 singles, 10 doubles, 10 trebles, 5 four-folds, and 1 five-fold accumulator.

A full-cover bet on six selections comprising 63 bets: 6 singles, 15 doubles, 20 trebles, 15 four-folds, 6 five-folds, and 1 six-fold accumulator.

Germany's cross-provider limit and activity tracking system ensuring betting limits are enforced across all licensed operators.

A race exclusively for horses that have never won a race; ideal for identifying future stars at longer odds.

A fight verdict where two judges score for one fighter and the third judge scores it a draw.

Odds ranging from -1 to +1 used in Asian betting markets; positive values show profit per unit, negative show stake needed to win 1 unit.

A Spanish term for a 5-0 victory, often used colloquially to describe a dominant win.

A market on which team wins a specific map within a best-of-3 or best-of-5 eSports series.

The percentage built into bookmaker odds that ensures their implied probabilities sum to more than 100%, guaranteeing a profit regardless of the outcome.

A specific betting option offered for an event, such as match winner, over/under, or first goalscorer.

The volume of money available at each price level on an exchange, indicating how actively the market is traded.

The degree to which betting market prices reflect all available information; efficient markets offer no consistent edge.

The temporary closure of a betting market by a bookmaker, often ahead of an announcement or during live events.

A progressive staking system where the bet is doubled after every loss, aiming to recover all previous losses with a single win.

A negative progression staking strategy where the stake doubles after each loss to recover all losses with a single win.

A bet on which player will win a tennis match outright.

A bet on an exchange that has been accepted and matched against another user's opposing stake.

A technique that uses free bets and promotions from bookmakers in combination with lay bets on an exchange to generate risk-free profit.

A tool determining the optimal lay stake to match a bookmaker free bet and guarantee a profit.

A condition on many casino bonuses restricting the bet size while using bonus funds, typically to £5 per spin.

The largest peak-to-trough decline in a bankroll over a given period, used to assess risk.

The largest amount a bookmaker will pay out on any single bet or accumulator, regardless of the odds or stakes.

The largest permitted bet size on a particular market or for a specific customer, set by the bookmaker.

A combined MMA market betting on both how and when a fight will end for maximum odds.

A market on how a match will be decided — e.g., normal time, extra time, or a penalty shootout.

A market predicting how a fight will end: KO/TKO, submission, decision, or disqualification.

Placing bets on both sides of a market at different prices to win both bets if the result falls between the two lines.

The smallest stake a bookmaker or exchange will accept on a given market.

The lowest odds a bet must be placed at for it to qualify for a promotional offer.

A dedicated smartphone application from a bookmaker allowing betting, deposits, live streaming, and account management.

Using a statistical model to generate probability estimates and compare them to bookmaker odds to find value.

A straight win bet — pick which team or player will win, with no spread or handicap applied. Used primarily in North American sports.

A computational method using repeated random sampling to model the range of possible bankroll outcomes.

Predicted odds published by a bookmaker for a race before the market officially opens.

A bet placed not for value but to appear as a losing casual bettor, often used by matched bettors to protect accounts.

A market allowing you to cover a range of exact scores in one bet, at proportionally lower odds.

Any bet combining more than one selection, including doubles, trebles, and full accumulators.

A promotion refunding a portion of the stake if an accumulator misses by one leg.

A feature that multiplies a win by a set factor, boosting the payout significantly.

A market on which player will be named the Most Valuable Player of a season, tournament, or game.

A tipster's strongest recommended bet of the day — their most confident selection, usually highlighted as their best bet.

A tipster's top recommended bet for the day, typically highlighted in newspaper columns or betting blogs.

A staking system where the bet size increases after a loss, aiming to recover losses quickly.

The difference between offensive and defensive rating — points scored minus points allowed per 100 possessions.

An in-play market on which team (or neither) will score the next goal.

A specialised or less mainstream betting market covering unusual statistics or minor sports.

A promotion giving free credits or free bets to new customers without requiring an initial deposit.

A rare promotion where bonus funds can be withdrawn immediately with no wagering requirements.

Odds recalculated to remove the bookmaker's margin, revealing the true implied probability.

A bet where the risk is eliminated by placing an offsetting lay bet on an exchange, typically used to convert bookmaker free bets into guaranteed profit.

A horse that is withdrawn from a race before it starts, usually triggering Rule 4 deductions and void bets.

A bookmaker promotion returning stakes if the selected horse is a non-runner on the day of the race.

A bet on non-sporting or unusual events such as election results, TV show outcomes, or celebrity news.

Germany's national self-exclusion database (Übergreifendes Sperrsystem) connecting all licensed operators to a central exclusion list.

A numerical representation of the probability of an outcome and the potential payout if that outcome occurs. Higher odds mean a less likely outcome but a greater reward.

The process of checking multiple bookmakers to find the best available price on a given selection.

The change in a selection's price over time from opening to closing, driven by money and information.

When the potential winnings are greater than the stake; odds above evens (above 2.00 decimal).

A selection priced below even money, where you must stake more than you will profit — reflecting a greater than 50% implied probability of winning.

The five NFL players who protect the quarterback and create lanes for the running game; a key factor in handicapping.

Points scored per 100 possessions, reflecting a team's offensive efficiency.

A market on the number of offside decisions in a match, popular in highly technical leagues.

The initial odds set by a bookmaker when a market first becomes available, before any betting action influences the price.

The edge gained by betting an early line before the market tightens toward the closing price.

The initial price offered on a selection when the market first becomes available.

A bet on the overall winner of a competition or league rather than on a single match result.

Betting on the overall winner or final standing of a competition rather than the result of a single match.

A market open for the full duration of a competition or season, settling only at the end.

A market on whether a specified player or team will finish in the top 10 of a competition.

A bet on who will win a competition, league, or event over its entire duration.

A selection with long odds considered unlikely to win; also called a longshot or underdog.

When a team or player achieves better actual results than their expected statistics suggest they should.

A market betting on whether the total number of goals, points, or other measurable events in a match will be over or under a specified line.

A situation where the bookmaker's odds are higher than the true probability warrants, giving the bettor a value opportunity.

The British term for the bookmaker's margin — the percentage by which the sum of implied probabilities in a market exceeds 100%, ensuring the bookmaker's profit.

Profit and loss tracking — monitoring all betting income and expenditure for accurate performance measurement.

A measure of how fast a team plays, expressed in possessions per 48 minutes; faster pace often means higher totals.

A betting system where all bets on a market are pooled and the total is divided among winners after a deduction; equivalent to the Tote.

The American term for an accumulator — a single bet combining multiple selections where all must win, with odds multiplying across each leg.

When only a portion of a requested stake has been accepted by the exchange market.

Settling only a portion of a bet before the event ends, keeping the rest active to ride out the result.

A market on the percentage of passes completed by a team or individual player in a game.

The total yards a quarterback throws for in a game; a popular player prop market.

A full-cover bet on three selections comprising 7 bets: 3 singles, 3 doubles, and 1 treble.

The total amount a bookmaker pays out on a winning bet, equivalent to the return (stake + profit).

The proportion of money wagered that a casino game returns to players; equivalent to RTP.

The percentage of penalties a team successfully kills without conceding a goal.

A market on whether a penalty will be awarded or scored in a match.

The total time a player or team has spent in the penalty box during a game.

A tiebreaker where players alternately take penalties to decide a knockout match after a draw.

Player Efficiency Rating — a composite statistic summarising a player's overall per-minute performance.

Staking a fixed percentage of the current bankroll on each bet, so stakes grow or shrink with the bankroll.

Betting on the outcome of a single period (first, second, or third) in a hockey game.

A sharp, low-margin bookmaker widely considered the gold standard for closing line efficiency.

F1 markets on the number of pit stops a driver will make or which team will pit first.

A bet on a selection to finish within a specified number of positions, typically in horse racing, paying a fraction of the win odds.

A bet on a selection to finish within a defined number of places (e.g., top 2, 3, or 4) rather than to win outright.

The number of places a bookmaker pays for a race and the fraction of win odds used for the place element.

A market on the number of assists a basketball player will record in a game.

A composite market based on a player's overall contribution in a match, often combining goals, assists, and other metrics.

A market on how many points a specific basketball player will score in a game.

A market on the number of rebounds a specific basketball player will grab in a game.

A market on a specific player scoring two or more goals in a match.

A market on the number of goals a specific player will score in a match or over a period.

Another term for wagering requirements — the amount of betting turnover required to release bonus funds.

The opposite of a teaser; spreads move against the bettor in exchange for much higher potential payouts.

A player statistic showing goals scored while on ice minus goals conceded; a rough proxy for defensive reliability.

A market on whether a driver or horse will finish in the top three (or specified place positions).

The margin of victory a team must win by (or stay within) to cover the spread — the primary betting market in American football and basketball.

A market on whether a specific driver will finish in the top 10 and score championship points.

A probability model widely used to predict the number of goals in a football match based on average scoring rates.

A market on which driver will qualify first and start the race from the front of the grid.

Betting on political events such as election results, referendum outcomes, or government formation.

Managing a collection of bets across multiple sports and markets as a diversified investment portfolio.

A staking system where the bet size increases after a win, capitalising on winning runs.

A ranking concept assessing a fighter's skill and dominance regardless of weight class.

A goal scored while the opposing team is serving a penalty and has fewer players on the ice.

The percentage of power play opportunities a team converts into goals; higher rates favour certain NHL prop markets.

A number summarising the relative strength of a team, used by bettors and bookmakers to set lines.

Passes Allowed Per Defensive Action — a measure of pressing intensity; lower PPDA means a more aggressive press.

A bet placed before an event begins, as opposed to in-play betting during the event.

Exchange trading activity in the period before an event begins, exploiting market inefficiencies in the run-up.

The odds a bettor's model generates for an event, used to compare against bookmaker prices to find value.

Building mathematical models to forecast sports outcomes, used by professionals to gain an edge over bookmakers.

The frequency and aggression with which a team applies defensive pressure, measured by metrics like PPDA.

Informal term for the odds offered on a selection by a bookmaker or exchange.

A promotional enhancement to odds on a specific selection, offering a better price than the standard market odds.

A feature automatically upgrading a bettor's odds to a better price if it improves between placing and confirmation.

The process of assigning numerical probabilities to each outcome in a market for comparison with bookmaker odds.

A gambling disorder characterised by persistent, uncontrolled betting that causes significant personal, financial, or social harm.

Someone who bets as a primary income source, using disciplined staking, data models, and bankroll management.

The net gain from a winning bet after deducting the original stake from the total return.

A promotional token multiplying the profit (not the total return) on a qualifying bet.

The ratio of gross winnings to gross losses; a profit factor above 1.0 is profitable.

A market or sport where a bettor has documented positive ROI over a statistically significant sample.

A jackpot that grows with each bet placed across a network of connected games until one player wins it all.

Passes that advance the ball significantly toward the opponent's goal, used to measure build-up play quality.

A unique code entered during registration or deposit that unlocks a specific promotional bonus.

A side bet on a specific event or statistic within a game, unrelated to the match result — such as a player's stats, specific plays, or game events.

Adjusting the stake in proportion to the perceived edge or confidence level of each bet.

The aggregate wagering action from casual bettors, often skewed towards popular teams and favourites.

The aggregate wagering volume from recreational bettors, typically concentrated on popular selections.

The ice hockey equivalent of the point spread, set at 1.5 goals — the favourite must win by 2+ goals, the underdog can lose by 1 goal or win outright.

When a bet results in a tie between the bettor and the bookmaker, with the stake returned and no profit or loss recorded.

When a total or spread bet lands exactly on the line, resulting in a stake refund rather than a win or loss.

A comprehensive metric rating quarterback performance on a 0-100 scale, incorporating all aspects of play.

A pool bet requiring a placed selection in races 3, 4, 5, and 6 of a Tote meeting.

A bet meeting the minimum requirements to trigger a promotional offer, such as minimum odds and stake.

A market on the result or total points in a specific quarter of a basketball or American football game.

The place in the waiting list for an unmatched bet to be accepted, determined by the time it was submitted.

A market on which team will reach a specified number of goals first.

A market on which driver or horse will finish first in a given race.

The live betting market that opens on the day of a horse race, featuring more liquidity and accurate odds.

Software ensuring each outcome in a digital casino game is independent, random, and unpredictable.

A regular pop-up notification during gambling sessions showing time spent and net profit or loss.

The total yards a receiver gains from catching passes in a game.

A player prop on the number of catches a receiver will make in a game.

A casual bettor who bets for entertainment rather than profit, typically without a systematic approach.

Adjusting an exchange position to minimise losses across all outcomes when a trade has gone wrong.

The percentage of red zone trips (inside the opponent's 20-yard line) that result in a touchdown.

A promotion rewarding both the existing customer and a newly recruited friend with free bets or bonuses.

Historical booking and dismissal rates for specific referees, used to inform cards markets.

The return of a stake to a bettor, typically because a bet is voided, a non-runner withdraws, or a promotion applies.

A statistical method identifying the relationship between variables to predict future outcomes.

The statistical tendency for extreme results to move back toward the average over time.

A market settling only on the result after 90 minutes in football or after standard playing time in other sports.

An outright market on which teams will be relegated to a lower division at the end of the season.

A regular promotion offering bonus credits when existing customers make subsequent deposits.

A feature allowing bettors to propose a unique combination or market that is not standard, which the bookmaker then prices.

Similar to request a bet — a feature where bettors ask for a price on a specific combination market.

A framework of tools and practices designed to prevent and minimise gambling-related harm.

A gambling company that actively implements player protection measures and promotes safe gambling practices.

The benefit of having more days off between games compared to the opponent, correlating with better performance.

A refund offer if the player you backed retires through injury at any point in the match.

The total amount paid back to a bettor on a winning bet, including both the profit and the original stake.

An Asian Handicap where the favoured team gives a head start to the underdog; a market available on both sides.

Two straight forecasts covering both possible orders of two selected finishers; costs double a single forecast.

Two if bets running in both directions between two selections, ensuring action regardless of which game resolves first.

When betting percentages strongly favour one side but the line moves in the opposite direction, suggesting sharp money on the other side.

When odds move in the opposite direction to heavy public support, suggesting sharp counteraction.

Monitoring return on investment across all bets to measure the overall profitability of a strategy.

Another term for wagering requirements — the number of times a bonus must be wagered before withdrawal.

A casino table game where a ball spins around a wheel with numbered pockets; bettors predict where the ball will land.

A market predicting in which round a fight will end, or whether it will reach a certain round.

Betting on a broader band of rounds (e.g., rounds 1-3 combined) rather than an exact round, for increased probability.

A set of three selections combined into three doubles and a treble, plus up-and-down bets; provides returns even if one selection loses.

The most prestigious flat racing meeting in the UK, held over five days in June with top Group 1 races.

The percentage of all wagered money a game is statistically expected to pay back to players over time.

A deduction applied to horse racing bets when one or more runners are withdrawn after the market has been set, reducing winnings proportionally.

A reduction applied to winnings when a runner is withdrawn from a race after bets have been placed, reflecting the reduced competition.

Baseball's equivalent of the point spread, set at 1.5 runs — the favourite must win by 2+ runs, the underdog can lose by 1 or win outright.

The total yards a running back or other player gains on the ground in a game.

A player prop on the number of quarterback sacks a defender will record in a game.

A 2-point scoring play where the defensive team tackles the offensive ball carrier in their own end zone.

A market on whether a safety car or virtual safety car will be deployed during a race.

A parlay combining multiple markets from the same game into one bet, with legs that may be correlated.

A bookmaker feature processing withdrawal requests within hours on the same day they are submitted.

The number of observations or bets required for statistics to become reliable and predictive.

The proportion of shots a goaltender stops; calculated as saves divided by shots faced.

Taking very small, rapid profits from one or two tick movements in exchange odds.

Taking small, quick profits from minor odds movements, particularly on betting exchanges before and during events.

A special symbol in a slot game that typically triggers bonus features or free spins regardless of position on the reels.

A UK pools bet requiring the selection of the winner of six nominated races; the pool rolls over if not won.

A market predicting both the half-time scoreline and the full-time scoreline in the same bet.

A combined bet on the first goalscorer and the correct final score of a match, offering high odds for the twin prediction.

A simple market on whether at least one goal will be scored in the match (Score) or the game ends 0-0 (No Score).

A bet combining a specific player to score the first goal and the correct final score of the match.

An offensive series that results in points; market on whether a team scores on their opening drive.

A market on the outcome of the second 45 minutes only, ignoring the first-half score.

Goals scored after half-time; teams with strong second-half records offer distinctive market opportunities.

The specific outcome a bettor chooses to back within a given market.

A formal process where a bettor voluntarily bans themselves from gambling platforms for a set period.

In spread betting, placing a bet that profits if the result is lower than the quoted spread.

A responsible gambling control allowing users to cap the duration of a gambling session.

A market where one player is given a head start in sets to level the playing field.

A restarted play from a dead ball situation — corners, free kicks, or throw-ins — allowing pre-planned movements.

A sophisticated, professional-level bettor who bets with an informational or analytical edge and consistently beats the closing line.

Wagers placed by respected, professional bettors whose action often reveals where the smart money lies.

A measure of risk-adjusted return, dividing average profit by the standard deviation; higher is better.

A goal scored while the scoring team itself is shorthanded due to a penalty.

When odds decrease (become smaller), reflecting increased confidence or money on a selection.

The total number of shots directed on goal that require a save or result in a goal.

A market on the number of shots on target a player or team will produce.

The proportion of a team's total shots that are on target, reflecting attacking quality and efficiency.

The simplest bet type — one selection, one outcome, settled immediately when the event concludes.

Betting triggers based on specific game situations — rest, travel, schedule, motivation — that historically produce edges.

The annual European rugby union championship between England, France, Ireland, Italy, Scotland, and Wales.

A casino game where reels spin and combinations of symbols determine the payout; fully random outcomes.

Betting on professional snooker covering match winner, frame handicap, and highest break markets.

A bookmaker that tolerates sharp action and is slow to react to line movements, offering value for informed bettors.

An odds line that is less efficiently priced, potentially offering value to sharp bettors.

The official closing odds determined at the start of a race, used when no fixed price was taken.

The official odds at which a horse is returned at the start of a race, used to settle bets placed without a fixed price.

An exchange bet placed at the official Starting Price rather than a pre-race back or lay price.

Unique or thematic bets offered by bookmakers on events outside standard sports markets, often for entertainment.

A bet with a lower probability of winning but high potential return; placed for entertainment or as a small part of a strategy.

A fight verdict where two of the three judges score for different fighters.

The American and international term for a bookmaker or betting operator that accepts wagers on sports events.

The points deficit assigned to the favourite in basketball or NFL betting to level the market.

The quoted buy and sell price in a spread bet, representing the bookmaker's margin.

A bet where the outcome is determined by how far the result exceeds or falls short of a quoted spread; winnings and losses are variable.

Betting on the movement of financial markets in which profit or loss is determined by how far the price moves from the quoted spread.

Markets based on the difference between two outcomes — covering everything from point spreads to goal handicaps.

A short Saturday race in selected F1 weekends that sets part of the grid; separate betting markets are available.

A casual or recreational bettor who bets on public perception, popular teams, and emotional selections rather than analytical value.

The amount of money placed on a bet — the sum risked in exchange for the potential return.

When the original stake is returned alongside winnings; a feature of some special promotions.

When the original stake is included in the total return paid to a winning bettor (standard in decimal odds).

A structured approach to deciding how much to bet on each selection, designed to manage risk and grow a bankroll systematically.

A statistical measure of the spread of results around the average, used to quantify risk in betting.

The official odds of a selection at the moment an event begins, determined by the market or an official process.

Using data, statistics, and mathematical models to identify and exploit inefficiencies in bookmaker prices.

A threshold indicating that a result or pattern is unlikely to be due to random chance.

A data hub within a bookmaker's platform providing team and player stats to inform betting decisions.

A sudden, significant move in a betting line caused by heavy coordinated sharp action, signalling that well-informed bettors are backing one side heavily.

Quickly following sharp line movement to a new price before all bookmakers update their odds.

A sudden, rapid line movement triggered by coordinated sharp or syndicate betting across multiple bookmakers.

A jump racing discipline with larger fences and often more demanding conditions than hurdles.

A predetermined limit on losses that, once reached, triggers a pause or cessation of betting.

When a referee ends the fight due to a KO, TKO, or a fighter tapping out; also called a finish.

A bet predicting the exact first and second finishers in a race in the correct order.

A bet on the pit stop strategy a driver will employ — e.g., one-stop vs two-stop — during a race.

The percentage of bets that win (regardless of stakes or odds); meaningful only when considered alongside average odds.

A method of victory where a fighter forces the opponent to tap out or verbally submit due to a joint lock or choke.

Private or fixed-odds sports betting in Slovakia, governed by the gambling act and licensed by URHH.

A full-cover bet on seven selections comprising 120 bets: 21 doubles, 35 trebles, 35 four-folds, 21 five-folds, 7 six-folds, and 1 seven-fold — no singles.

Betting on all possible outcomes of an event at different bookmakers to guarantee a profit regardless of the result.

The court type — clay, grass, or hard — significantly affecting player performance and betting markets.

An exchange strategy seeking to profit from a large odds swing by opening and closing positions at the extremes.

Holding a position on a betting exchange for a longer period, looking for a significant odds swing to lock in profit.

A combination bet that covers multiple permutations of selections, requiring only a subset of selections to win for a return.

Pre-match announcements about line-ups, suspensions, and fitness, which inform betting decisions.

A wager on a specific team-related outcome within a game, such as total touchdowns or total rushing yards.

A market on which team (or neither) will open the scoring in the match.

A market on the points scored by just one specific team, rather than the combined total of both.

A parlay where bettors adjust point spreads or totals in their favour in exchange for reduced odds.

Trading tennis match odds in-play by reacting to momentum swings, service breaks, and momentum shifts.

A market on the exact set score of a tennis match (e.g., 2-0 or 2-1 in a best-of-3).

The smallest increment by which odds can move on a betting exchange.

The value of the minimum price movement on a betting exchange, which varies depending on the price range.

A market on whether a tie-break will occur in a set or match, or on the outcome of a specific tie-break.

A possession-based style of play emphasising short passes, movement, and positional dominance.

A responsible gambling tool restricting the amount of time spent on a gambling platform per session or per day.

A market on when the first goal of a match will be scored, usually split into time bands.

An in-play market on the time band in which the next goal will be scored.

A person who provides betting selections, usually paid or on a subscription basis, claiming to have an edge.

The process of independently auditing a tipster's betting record to confirm claimed results are accurate.

An early morning predicted market compiled by a bookmaker's trader before official betting begins.

A championship bout typically contested over five rounds rather than the standard three.

A market on which player will finish as the top scorer in a league or tournament.

The combined points scored by both teams in a basketball game; bettors bet over or under this line.

A market on the combined number of yellow and red cards in a match.

A market on the combined number of yellow and red cards shown in a match.

A market on the total number of corners taken in a match, often with over/under lines of 9.5 or 10.5.

A market on the combined number of games played across all sets in a tennis match.

A market on whether the combined score of both teams will be over or under a specified points total.

A market on whether the total number of rounds will be over or under a specified number.

A market on the total offensive yards gained by a team or player in an American football game.

A pool betting system where all stake money is combined and divided among winning bettors after a deduction.

A pool bet on the first and second finishers in a race in the correct order, via the Tote pool.

A pool bet predicting the winner of each of the first six designated races at a specific meeting.

A pool bet requiring a placed selection in each of the first six races of a meeting.

A pool bet predicting the first, second, and third finishers in a race in the correct order.

A bet on whether a specific player will score a touchdown at any point during an NFL game.

An outright bet on which team will win a tournament such as the Rugby World Cup or Six Nations.

A tipster who aggressively sells picks, often with misleading records or no verified long-term profit.

Buying and selling positions on a betting exchange before or during an event to lock in a profit regardless of the outcome.

The licensed professional responsible for preparing and conditioning a horse for racing.

A game where a heavily favoured team is expected to overlook a weak opponent due to an upcoming high-profile match.

A single bet combining three selections where all must win, with the returns from each selection rolling onto the next.

A bet predicting the exact first, second, and third finishers in a race in the correct order.

A slight reduction in odds, usually by a small amount; less dramatic than a full shorten.

When a basketball player records double digits in three statistical categories (points, rebounds, assists) in one game.

A bet on three selections comprising 4 bets: 3 doubles and 1 treble — returns require at least two winners.

The actual probability of an outcome without any bookmaker margin added, representing the fair price.

The actual likelihood of an outcome independent of any bookmaker margin; the basis for identifying value.

The difference between turnovers forced and turnovers committed; a strong predictor of ATS performance.

An attempt to score 2 points after a touchdown by running or passing into the end zone instead of kicking the extra point.

The UK Gambling Commission — the government body that licenses and regulates all gambling operators in Great Britain.

A judge's verdict where all three judges score the fight for the same fighter.

When actual results fall below what expected statistics would predict.

The preliminary bouts on a fight card before the main event, often featuring lower-profile fighters.

When the odds offered are lower than the true probability suggests, meaning the bet offers no value and favours the bookmaker.

A 9-bet combination on nine selections arranged in a 3×3 grid, covering the eight lines of the Union Jack pattern.

A standard bet size, usually expressed as a percentage of the bankroll, used to compare performance across bettors.

Expressing bet sizes in standardised units (e.g., 1 unit = 1% of bankroll) for consistent comparison and tracking.

A bet placed on an exchange that has not yet been accepted because no counterparty has matched it at those odds.

The initial premium or fee paid to enter certain spread betting positions or exotic bets.

Úrad pre reguláciu hazardných hier — Slovakia's Gambling Regulatory Office, responsible for licensing and oversight.

A bet where the offered odds are higher than the true probability of the outcome, giving the bettor a positive expected return.

A bet where the odds offered by the bookmaker are greater than the true probability of that outcome occurring.

A long-term strategy of consistently identifying bets where the bookmaker's odds are higher than the true probability.

A scoring system expressing how much value a bet has relative to the fair odds; higher rating = more edge.

Video Assistant Referee — technology used to review match decisions such as goals, penalties, red cards, and mistaken identities.

The statistical spread of outcomes in a game or betting strategy; high variance means more extreme swings.

A tool modelling the range of possible bankroll outcomes over a given number of bets at a specific edge and odds.

The bookmaker's commission embedded in betting odds — the amount taken from every bet to ensure the bookmaker profits regardless of outcome.

The commission or margin built into the odds by a bookmaker, ensuring they profit regardless of the outcome.

An elevated loyalty tier for high-volume bettors, offering personal account managers, better limits, and exclusive offers.

A bet that is cancelled and refunded, usually because the event did not take place, a selection did not participate, or the market was priced in error.

A bet that is cancelled and the stake returned, usually because the event did not take place or a selection was withdrawn.

The risk level of a slot or casino game — high volatility means less frequent but larger wins; low volatility means smaller, more frequent wins.

Another word for a bet or stake — the money committed to a particular selection.

A control restricting the total stakes a bettor can place per day, week, or month.

The number of times a bonus must be staked before it can be withdrawn as cash; also called playthrough.

When a player retires during or withdraws before a match due to injury; rules vary on how bets are settled.

The total load carried by a horse (jockey + saddle + equipment), assigned in handicap races based on ability rating.

The division in which a fighter competes, defined by strict weight limits (e.g., lightweight: up to 155 lbs).

A promotion offered to new customers, typically a matched deposit bonus, free bets, or enhanced odds on signup.

A slot symbol that substitutes for other symbols to help complete winning combinations.

A straightforward bet on a selection to finish first, with no place element.

A combined bet on a player to score anytime during a match and a specific team to win — easier than a scorecast as the player does not need to score first.

A bet on a horse to finish first, with no place element; the simplest horse racing wager.

A statistical model generating the probability of each possible match outcome based on team and player data.

Another term for strike rate — the proportion of selections that win.

A combined market backing a team to win and keep a clean sheet in the same match.

A bet combining a named player to score at any point and the team to win the match.

A loyalty reward credited as a free bet for each consecutive day on which net profit is achieved.

A market predicting by how many goals or points a team will win.

A market predicting by how many points a team will win.

The profit portion of a return — total return minus the original stake.

A bonus condition where only the profit (not the stake) from a bonus bet can be withdrawn.

The expected goals conceded by a team based on the quality of chances allowed, assessing defensive performance.

The quality of chances a team concedes, measuring how many goals a goalkeeper or defence should have let in.

A full-cover bet on four selections comprising 11 bets: 6 doubles, 4 trebles, and 1 four-fold accumulator.

The profit as a percentage of total stakes wagered; the standard measure of tipster and strategy performance.