https://www.espn.ph/mlb/story/_/id/4834 ... ng-weekendWhat makes this version of ABS so convincing is it passes the eye test. That was always the burden of proof for any robot umpiring system, whether it's fully integrated or challenge-based. It needs to avoid calls that look wrong. And so far, even with a dozen challenges to pitches falling within that stated margin of error -- and 42 total decided by less than a half-inch -- ABS is holding up its end of the bargain.
Seriously, to stand there and be prepared to hit a fastball as well as be prepared to challenge it takes practice