Automated Ball-Strike system

MLB's automated ball-strike challenge system is set to feature in 2026, and ESPN has launched a tracker ranking how teams and players fare with challenges of umpire calls. The system lets players contest ball and strike decisions reviewed by tracking technology, and the tracker will follow which clubs and hitters use challenges most effectively as the season unfolds.

A called strike two was overturned after a manager challenged the call under Major League Baseball's automated ball-strike system, which reviews ball and strike decisions in real time. The system, being tested this season as part of MLB's effort to improve umpiring accuracy, changed the pitch to a ball. It is among the clearest signs yet of how ABS challenges are altering games.

A strike-one call was reversed following a challenge to the Automated Ball-Strike system, with the pitch ruled outside the zone on review. It is one of the early instances of Major League Baseball's ABS challenge system changing a call mid-at-bat, and fans are debating how often the technology should be allowed to overturn human umpires' judgment.

An umpire's strike call was overturned and ruled a ball after a challenge to Major League Baseball's Automated Ball-Strike system, marking a notable moment as the league expands the use of robot officiating to review close pitch calls.