Photo Study of Samantha Stosur's Serve

Here, Stosur demonstrates ideal preparation for a twist serve, the more potent of the two kick serves. Sam's knee bend and arched back will enable her to swing upward and left-to-right to put a combination of topspin and left-to-right sidespin on the ball. This will give the ball ample clearance over the net and make it kick high and toward the receiver's left on the bounce. The ball must be somewhat behind and to the left of the head at contact on a twist serve.