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 ...

Instead of arguing, Poteet simply patted the top of his cap, signifying he wanted ... and broadcast feed. The umpire then announces the updated count. MLB estimates the process averages 17 seconds.

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