The job of the centre-back, (or central defender) (historically called a centre-half) is to stop opposing players, particularly the strikers, from scoring, and to bring the ball out from their penalty area. As their name suggests, they play in a central position. Most teams employ two centre-backs, stationed in front of the goalkeeper. There are two main defensive strategies used by centre-backs: the zonal defence, where each centre-back covers a specific area of the pitch, and man-to-man marking, where each centre-back has the job of covering a particular opposition player.