What is a walk off in baseball?

A walk off in baseball occurs when the home team scores the winning run in the bottom of the ninth inning or extra innings, thus ending the game. This type of victory is called a walk off because the winning team walks off the field immediately after scoring the game-winning run. Walk offs are often the result of a clutch hit, such as a home run or a game-winning RBI, and are a thrilling moment for both players and fans. Walk-offs can be particularly exciting during important games, such as playoff or championship games.