Unlike the other fielders, the catcher and pitcher must start every play in a designated area. The catcher must be behind home plate in the catcher's box, while the pitcher must be on the pitcher's mound, with one foot in contact with the pitcher's rubber. Once the ball is in play, however, the catcher and pitcher, like the other fielders, can respond to any part of the field necessary to make or assist in a defensive play. The defensive plays expected of catchers, aside from managing the pitcher by calling for pitches and catching them, include: