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Abs Challenge System

A baseball stadium videoboard displaying an automated ball-strike challenge graphic during a game

MLB's Robot Umpire Era Arrived on Opening Day. The First Challenge Was a Strikeout.

The Automated Ball-Strike challenge system debuted across Major League Baseball this week, and the early numbers suggest it's working exactly as designed.

Alex Rivers·March 27, 2026 at 5:41 PM UTC

Hawk-Eye cameras positioned around a Major League Baseball stadium for automated ball-strike tracking

Sports

MLB's Robot Umpire Era Arrives: The Challenge System That Will Transform Baseball

Starting Opening Night on March 25, every pitch in every MLB game will be subject to technological review. With spring training games beginning Feb. 20, the ABS Challenge System is about to reshape the sport.

Alex Rivers·February 18, 2026

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