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MLB Launches Itself Into Future With Major Shakeup

Teams will be permitted to challenge at least two balls and strike calls per game using robo umpires.

MLB has approved the use of robo umpires starting in the 2026 season—a massive shakeup that will permit players to dispute balls and strikes in real time. The league’s competition committee voted Tuesday to approve the installation of an “Automated Ball-Strike challenge system” that will give teams at least two chances to challenge calls during a game. Some active players on the committee opposed the new rule, sources told ESPN, but the six owners on the committee overruled the group. Challenges will only be permitted by the current hitter, pitcher, or catcher, who will initiate a review by tapping the top of their helmet or cap, MLB said. If a challenge is successful, another will be granted. Each use of the system will be displayed on TV and stadium jumbotrons, allowing everyone to see the technology, which comprises 12 cameras similar to those used to review shots in professional tennis. The system was first tested in the minor leagues and in the MLB All-Star game, and reportedly has a margin of error of around one-sixth of an inch.