A challenged pitch under review — the Automatic Ball-Strike system's verdict now decides about 1% of pitches each game and overrules the umpire roughly half the time.
The robot umpire is overruling the human about half the time — and catchers are paying for it
Eight weeks into baseball's first ABS season, the league's best pitch framer has already been traded. The data hint at a quiet reshuffling of who matters behind the plate.
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