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Umpiring

Challenge System Strike Zone Ball-Strike Calls Challenge Procedures Umpire Decisions Controversial Calls Human Element in Umpiring Automated Ball-Strike System Force Plays Robot Umpires

MLB Game Lengths Tick Up After Robot Umpires and ABS

League data link part of the modest rise in nine‑inning time to the Automated Ball‑Strike challenge that routes disputed calls to a computer.

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MLB Keeps Automated Ball‑Strike Challenge System After Positive Midseason Review

Red Sox Interim Coach Runs Onto Field to Wave Runner Home

One Month In, Players Say MLB’s ABS Is Tightening the Zone as Walks Climb

Pirates’ Nick Gonzales Wins ABS Challenge He Tried to Retract

ABS Challenge Tests Overturn Calls as Teams Split on Strategy Before MLB Rollout

ABS Challenge System Set for MLB Debut as Spring Data Shows Dodgers Struggling

MLB's Automated Ball-Strike System Sparks Mixed Reactions During Spring Training Tests

MLB Tests Automated Ball-Strike Challenge System During Spring Training