On-deck circle

The phrase “on deck” in baseball refers to being next in line to bat. The batter next in line to bat will only be guaranteed to do so provided there are no chances for double play or triple play to occur.

On Deck Circles

Players who are on deck are required to stand in the on deck circles, located in the foul territory between the home plate and the team’s benches. On deck circles are 5 feet in diameter, and are 75 feet apart. They both should be 10 meters behind the home plate.