What happened: A Ball 1 call was upheld after a batter, pitcher, or catcher invoked the Automated Ball-Strike (ABS) challenge system. The challenge sent the pitch to the automated review, which confirmed the original call on the field.

Why it matters: The ABS challenge system is one of MLB's most closely watched rule experiments, giving players a limited number of reviews to contest ball and strike calls. Each confirmed call reinforces the accuracy of human umpires while sharpening the debate over how much automation belongs in calling the strike zone.

What to watch: Watch how often challenges overturn versus confirm calls as MLB weighs whether to expand the ABS system beyond its current testing footprint.