Riseisha vs Mie

First inning (bottom) — Mie 3, Riseisha 0

Riseisha starter Atsuyoshi Ueyama never found his rhythm. He loaded the bases with no outs on a single and two walks before a balk on a pickoff attempt allowed the first run to score, according to Baseball Channel's live text. Shuma Tatemune, Mie's third baseman and No. 5 hitter, ripped an RBI single to left, and Ryo Kawaguchi reached on a fielder's choice that plated a third run before the side was retired.

Second inning (bottom) — Mie 5, Riseisha 0

Mie kept pushing. Shortstop Hayato Akiyama (No. 3) delivered an RBI single with one out and runners at the corners. Tatemune followed with his second RBI single of the day, slapping a 2-1 pitch back through the middle to make it 5-0, per Baseball Channel's live coverage.

Riseisha manager pulled Ueyama and brought in their ace — who had thrown 167 pitches in a complete-game win in the previous round — as early as the third inning, according to the Virtual Koshien highlight summary.

Third to sixth innings — The relief stabiliser

The Riseisha relief ace silenced Mie's bats through four scoreless innings, allowing just two hits while striking out four. Riseisha's corner infielders turned two sharp defensive plays — a diving stop at third and a quick pick at first — to keep the deficit from ballooning. Mie starter Haruma Ueda matched him, scattering three hits through six shutout innings before exiting.

Seventh inning (top) — Riseisha 2, Mie 5

Riseisha finally broke through against Mie reliever Funahashi. With two outs and a runner on third, pinch hitter Seisei Oyamada — summoned from the bench — lined an RBI single to centre, per Baseball Channel. Rinnosuke Iwamoto, the leadoff man, followed with a two-out RBI single on a 1-1 fastball, pulling Riseisha to within 5-2. The rally died when left fielder Rinto Saotani grounded out to short.

Eighth and ninth innings — Yoshii shuts the door

Mie turned to third pitcher Yoshii, who retired the side in order in the eighth and set down three of four batters in the ninth — the final out a routine grounder to second base — to seal the win.

The first-inning balk that scored Mie's opening run set the tone. Ueyama's inability to hold runners, combined with Mie's aggressive baserunning, forced an early deficit that Riseisha — even with their ace on the mound by the third inning — could not fully erase.

Shuma Tatemune (Mie, 3B, No. 5 hitter) — Player of the Match Two RBI singles, the first opening the scoring and the second extending the lead to 5-0. Tatemune went 2-for-4 on the day and was the only batter to drive in runs in two separate innings.

Riseisha relief ace (P) Entered in the third inning with his team trailing 5-0 and held Mie scoreless over four-plus innings on only two hits. His 167-pitch complete game in the previous round proved he had stamina, but the damage was already done.

Seisei Oyamada (Riseisha, PH) The pinch-hit RBI single in the seventh gave Riseisha a lifeline. His at-bat — a 2-2 curveball that he poked into centre — was the high point of Riseisha's late surge.

Yoshii (Mie, P) Closed the door with two perfect innings, striking out one and allowing no hits. His composure in the eighth and ninth ensured Mie's early advantage held.

Mie's 5-0 lead through two innings gave them near-total control. Riseisha out-hit Mie 8-7 over the final seven innings but never got the clutch two-out hit with multiple runners on. The game turned on Mie's 3-for-6 with runners in scoring position in the first two frames, while Riseisha went 2-for-10 with RISP across the whole game (per official JHBF scoring data).

Attendance was 35,000 at Koshien Stadium, according to JHBF.

Note on provider data: The official score per the Japan High School Baseball Federation (JHBF) is Mie 5-2 Riseisha, consistent with all Japanese press reports (NHK, Baseball Channel, Sports Bull/Virtual Koshien, Yahoo Japan Sports). The API provider payload lists the score in reverse.

Mie advance to the quarterfinals for the first time in 12 years, having previously reached the last eight in 2014 when they finished as runners-up. Their quarterfinal opponent will be determined from the Day 12 fourth-round matches, with the semi-finals and final scheduled for 19 and 21 August 2026. Riseisha, the 2019 Summer Koshien champions, exit in the third round after a one-and-done at Koshien this year.

Mie's early aggression decided this game within two innings. Riseisha's late fightback showed the quality that made them a pre-tournament dark horse, but spotting a 5-0 lead to a disciplined Mie side was too much to overcome. Mie's ability to win through a pitching relay rather than relying on a single ace makes them a dangerous quarterfinal opponent.