What is violating gambling rules in MLB and what happens if you break them

Major League Baseball is serious about gambling rules. Rule 21 protects the sport’s fairness. Players and staff face strict penalties for violations. Tucupita Marcano got a ban in June 2024. Luis Ortiz was placed on leave in July 2025. Umpire Pat Hoberg was dismissed in May 2024. MLB wants to maintain fan trust. The league closely monitors all gambling activity.