When the pitcher is on the pitcher’s mound, there are two legal positions in which they can throw the ball. These positions include the windup position and the set position. Both positions have their advantages and disadvantages, with the set position being better for throwing when there are base runners on bases. A pitcher assumes the windup position when they put their pivot foot on the pitcher’s rubber and face their shoulders towards the batter. In the windup position, the pitcher pushes off the rubber when they throw. The windup position is used when there are no runners on base, due to the added time it takes to make the throw.