On Wednesday, Major League Baseball officially announced the implementation of several rule changes for the 2020 season. The most significant of which is the “Three Batter Minimum” rule, which requires pitchers to face at least three batters (or pitch until the inning is over) before they come out of a game. The only exception for this rule is if a player is suffering from an injury or illness that prevents them from facing the three batters.
The concept is designed to avoid multiple pitching changes in a single inning, in order to maintain the pace of play.