This is an example of legal contact by a post defender. Inside the Lower Defensive Box (the area from the bottom tip of free throw circle to the 3′ posted up marks), a post defender may place one hand, with a bent elbow, and/or one forearm onto the back of an offensive player with the ball and his back to the basket. On this play, the post defender places one forearm onto the back of the offensive player with the ball and his back to the basket. This contact remains legal as long as the defender uses it to maintain his legally obtained position. The defender then simply backs away from the offensive player, “pulling the chair” as it is commonly known as. There is no foul called on this play as this is legal post defense.