Plus, how successful were challenges during spring training?

The Automated Ball-Strike Challenge System lets players appeal umpire calls, aiming to add accuracy and strategy to the game.

During the Mariners’ opening series against the Guardians, television analyst and former MLB pitcher Ryan Rowland-Smith ...

The high-speed-camera technology that lets players challenge pitch calls makes its full-time major-league debut this season.

Sept. 23 (UPI) --Major League Baseball entered an age of robot umpiring Tuesday after a league committee approved a high-tech system for players to challenge calls. The Automated Ball-Strike (ABS) ...

Players will finally be able to challenge pitches in the regular season, but there are some limitations.

FILE - An outfield screen shows a graphic indicating Seattle Mariners' Julio Rodriguez challenged a pitch call, initiating a review with the automated ball-strike challenge system, in the third inning ...

This wasn't just another replay review. It marked the first time the ABS challenge system directly ended a game.

NEW YORK — Robot umpires are getting called up to the big leagues next season. Major League Baseball’s 11-man competition committee on Tuesday approved use of the Automated Ball/Strike System in the ...

SEATTLE — Next year at T-Mobile Park, watching the Mariners will look a little different. Major League Baseball (MLB) is rolling out an automated ball-strike challenge system. Here's how it works: ...