During spring training this year, Major League Baseball used a challenge system for balls and strikes based on ABS (automated ball-strike system). For those unaware, ABS uses a Hawk-Eye camera that ...

The batter, pitcher or catcher simply tap their helmet or cap to challenge — but ... scoreboard and broadcast, and the umpire updates the count. The MLB says this takes about 17 seconds.

Starting in 2024, MLB focused testing on a challenge system in which the human umpire makes each original ... signaling with the tap of a helmet or cap; and assistance from the dugout is not ...