MLB on Tuesday announced that the ABS Challenge System will be implemented in 2026 spring training, regular season and postseason games after a vote by the Joint Competition Committee. MLB is entering the "robot umpire" age with the ABS system, which was tested in the minor leagues and during roughly 60% of 2025 spring training games. And, according to the numbers from the league's spring training test, one position could be crucial in the ABS Challenge System: catchers.
According to spring training data from MLB's official press release, catchers had a 56% overturn rate compared to 50% for hitters and 41% for pitchers, meaning backstops were the most successful of the three position groups at winning challenges.
