Handicap betting levels the playing field between two unevenly matched competitors by applying a virtual goal, point, or run advantage to one side. In a match where one team is a heavy favourite, the handicap forces bettors to consider not just whether the favourite wins, but by how much.
The mechanism works by adding or subtracting a number from the final score before settling the bet. If Chelsea are given a -2 handicap against Norwich, Chelsea must win by three or more goals for the bet to pay out. Norwich, receiving +2, win the handicap if they win, draw, or lose by only one goal.
Two main types of handicap exist in football: the European (3-way) handicap, which retains the draw outcome (useful when the handicap line lands exactly on the margin of victory), and the Asian handicap, which uses half or quarter lines to eliminate draws entirely. The Asian variant is more popular in professional betting circles due to lower margins and the elimination of the push risk.
Handicap markets are available across virtually all sports: goals in football, points in basketball, runs in cricket, games in tennis. The principle is universal — apply a virtual advantage to even the odds and create a more attractive two-way (or three-way) market.
Example
In a Champions League match, Bayern Munich are priced at 1.20 to beat a lower-ranked opponent. The -1.5 Asian handicap on Bayern is priced at 1.85 — a much more attractive number. You back Bayern -1.5. Bayern win 3-1, covering the -1.5 handicap (3 - 1.5 = 1.5 > 0). The bet wins.