This spring, MLB players can challenge ball and strike calls. The camera-based system is only an experiment for now — but it has the baseball world wondering where to draw the line with technology.

The home plate umpire utilizes an automated ball-strike challenge system, or ABS, during the Dodgers-Cubs spring training game on Feb. 20, 2025. MLB Photos via Getty Images ABS has been tested ...

The automated ball-strike challenge system in use in Class AAA in various forms could possibly come to the MLB as soon as 2026.