Robot umpires flip 54% of challenged calls in ABS debut as teams learn to time appeals
Teams won 5,686 of 10,557 ABS challenges as managers said clubs are still learning when to appeal.
- Robot umpires overturned 54% of challenged calls during the inaugural season of the Automated Ball-Strike System , which concluded Friday. Catchers proved far more successful than batters or pitchers in utilizing the new technology.
- Major League Baseball recorded 10,557 challenges this season, averaging 4.35 per game as teams grew increasingly aggressive. Officials confirmed 243 calls while 367 stands were recorded due to insufficient evidence for overturn.
- Philadelphia Phillies catcher J.T. Realmuto led all players with 81% success on at least 75 challenges. He secured the first game-ending ABS challenge in postseason history this week, flipping a call during the NL Wild Card Series against Atlanta.
- Yankees manager Aaron Boone described the system as "a new muscle for players to learn," treating the challenge as critical strategy. Players must make instinctive decisions on when to appeal during tight game situations.
- Houston manager Joe Espada noted the technology has "really changed how more selective some of these lineups are." Teams balance the 40% ninth-inning success rate against the need for late-game precision going forward.
12 Articles
12 Articles
Robot umpires flip 54% of challenged calls in ABS debut as teams learn
FILE - A call is overturned to a walk by the Automated Ball-Strike (ABS) Challenge System, displayed on the stadium screens, after Cincinnati Reds' Will Benson challenged at pitch result during the seventh inning of a baseball game against the Boston Red Sox in Cincinnati, March 28, 2026. (AP Photo/Carolyn Kaster, File)
The Toronto Star
Robot umpires flip 54% of challenged calls in ABS debut as teams learn to time appeals
NEW YORK (AP) — Robot umpires overturned 54% of challenged calls in the first season of the Automated Ball-Strike System, and catchers were far more successful than batters.
ABS played a leading role during the 2026 season of the MLB and, of course, in the Wild Card series, in which for the first time the automated ball and strike review system was part of a postseason. The system reversed 54% of the launches challenged during its first campaign [...]
Robot umpires flip more than half of challenged calls in ABS debut
NEW YORK — Robot umpires overturned 54 per cent of challenged calls in the first season of the Automated Ball-Strike System, and catchers were far more successful than batters. Learning when to challenge is key. The Cincinnati Reds had a net gain of 16.8 runs, according to Baseball Savant calculations of total run value of overturns […]
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