The Commissioner of Major League Baseball (MLB) is the chief executive officer responsible for overseeing the operations and governance of professional baseball in the United States and Canada. This position was established in 1920 to ensure the integrity of the game, manage league affairs, and represent the interests of the teams and players. The commissioner has the authority to enforce rules, negotiate contracts, and make decisions on disciplinary actions. The commissioner is appointed by the MLB owners and serves a term that can be renewed. This role has evolved over the years, with notable commissioners like Bowie Kuhn and Bud Selig implementing significant changes to the game, including the introduction of the wild card playoff system and the promotion of baseball internationally.