Major League Baseball introduces the Automated Ball-Strike Challenge System, fundamentally changing how baseball is officiated. Players can now challenge an umpire's ball and strike calls, letting technology determine the outcome.

The system uses high-speed cameras to track pitches in three dimensions, creating a digital strike zone customized to each batter's height. Human umpires still make all calls on the field, but players now have limited opportunities to challenge.

Each team receives two challenges per game. Only the pitcher, catcher, or batter can initiate one by tapping their head. If the challenge proves correct, the team keeps it. Wrong calls cost the team a challenge.

Hawk-Eye Innovations powers the system, using proven camera tracking technology from tennis and soccer. T-Mobile's private 5G network enables real-time data transmission between cameras and the system operator.

Players like Juan Soto with elite plate discipline gain strategic advantages. Traditional skills like pitch framing evolve under the new system. Teams treat challenges as limited resources, often saving them for crucial late-game moments.

The technology generates extensive data on pitch accuracy and player tendencies. The system maintains human umpires as final authority while removing guesswork from the most contentious aspect of baseball.