Which teams are challenging the most? When in games are challenges being used? Is the new system leading to more walks?

The pitcher, catcher, or hitter can challenge an ump's call immediately after a pitch by tapping their head. Each team gets two challenges per game.

NEW YORK (AP) — Major League Baseball will use robot umpires to call balls and strikes as part of a challenge system next season. Naylor said he was just trying to make light of the situation after ...

Athletics pitcher Aaron Civale disputes a ball four call as the umpire urges an ABS challenge in a viral moment vs. the Yankees Tuesday night.