The announcement comes after years of testing in the minor leagues. ABS made its full-season debut in 2021 in the Class A Florida State League, and by ’23 it was used in all Triple A games. MLB also ...

Major League Baseball’s 11-man competition committee has approved use of the Automated Ball/Strike System in the major leagues in 2026.

Major League Baseball's competition committee approved the automated strike zone challenge system for the 2026 season on ...

Ever since Billy McLean became the first major league umpire in 1876, the umpire has been baseball’s Supreme Court—the highest court in the land. It helped McLe ...

ABS will be introduced in the form of a challenge system in which the human umpire makes each call, which can be appealed to the computer.

Human plate umpires will still call balls and strikes, but teams can challenge two calls per game and get additional appeals ...