Mlb 2024 Rule Changes. Major league baseball announced that a number of new rules will go into effect for the 2024 season after the league’s competition committee voted to enact them earlier today. A news release detailed the changes for the 2024 season that were agreed upon by the competition committee, which is comprised of six owners, four players, and an umpire.

Every team will have four mound visits per game with their pitchers, down. The joint competition committee voted.