ABS (automated ball-strike system)

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 strikeout call stood after a review using Major League Baseball's automated ball-strike system, with the ABS challenge confirming the pitch was a strike. The moment highlights how the new challenge mechanism is being used in games, giving players a way to contest close ball-and-strike calls that were previously final.

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.

A strike call was upheld after a manager challenged it under Major League Baseball's automated ball-strike system, with MLB.com confirming the ruling. The ABS challenge system, now in use at the major league level, lets teams contest ball and strike decisions, and calls are verified by automated tracking rather than human judgment. The confirmed strike marks an early, high-profile moment for the new technology this season.

MLB teams and players are being ranked on their use of the automated ball-strike (ABS) challenge system in 2026. The tracker follows how often clubs contest umpire calls and how successful their challenges are, as the robot-umpire system continues its league-wide rollout. Attention is on which managers and hitters are adapting best to the new technology.