Challenge System is the biggest rule change for the 2026 MLB season, two other minor but notable changes in umpire guidance ...

MLB heard allegations throughout 2025 — including during the World Series — that coaches were trying to sneak a peek at pitchers’ grips.

Ahead of the 2026 season, MLB will implement a rule change preventing coaches at first and third base from leaving their box until after a pitch is thrown.

MLB owners voted on Thursday to enforce a rule that requires first- and third-base coaches to stay within their designated boxes until a pitch is thrown.

MLB owners want to make it harder for teams to engage in pitch-stealing tactics on the field. Team owners reportedly voted to approve a rule Thursday that would prevent first and third-base coaches ...

MLB base coaches will have to remain in their respective coaches' boxes until the pitch is thrown after owners voted to enforce the rule.