Robot Umpires Set for 2026 MLB Debut Amid Mixed Reactions from Players and Managers
September 23, 2025
Major League Baseball will implement the Automated Ball/Strike System (ABS) with robot umpires starting in 2026, while human umpires will continue calling balls and strikes with the option for team challenges.
Spring training data shows teams challenge approximately four calls per game, with over half of these challenges resulting in overturned calls, slightly favoring the defense.
Some traditionalists, including former players and managers, are concerned that the system could diminish the role of skilled catchers and alter pitch-calling strategies.
While some players see benefits like increased accountability and fairness, there are concerns about the system's accuracy, consistency, and potential long-term impacts on the game.
Yankees manager Aaron Boone expressed cautious optimism about the ABS, hoping it benefits MLB, though he remains somewhat skeptical about its immediate effects and its influence on catcher framing.
Boone also mentioned that the system might not significantly change catchers' framing but could help get more pitches to star player Aaron Judge.
Phillies manager Rob Thomson strongly supports the ABS, citing it as a tool to increase player accountability, focus, and add extra challenges during extra innings.
A playoff scenario tracker from The New York Times is available to help fans follow postseason possibilities and outcomes.
Red Sox pitcher Carlos Narvaez has increased his innings pitched, reports feeling great, and is ready for postseason, highlighting his durability.
Red Sox rookie Triston Casas is recognized as an elite strike zone student, with strong plate discipline, though injuries earlier in his career have delayed his full potential.
Red Sox players Roman Anthony and Triston Casas are expected to benefit from the ABS due to their strike zone awareness and discipline.
Baseball analyst Lance Brozdowski explained the ABS system during a live interview, emphasizing its features, implications, and operational details still to be disclosed.
Summary based on 88 sources
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Sources

The Verge • Sep 23, 2025
MLB will use robot umpires beginning next season
The Guardian • Sep 23, 2025
The robots are (almost) coming: MLB players allowed to challenge balls and strikes in 2026
Forbes • Sep 24, 2025
For MLB, Atlanta Braves, Robot Umpires Are Nearly Three Decades Too Late
USA TODAY • Sep 23, 2025
'Robot umpires' coming to MLB with ABS challenge system approved for 2026