Abstract: A tennis racket is shown with a movable weight and a latching device for release of the weight which is moved by the swinging of the racket to bring the weight to or near the head of the racket. An alternate construction shows a ball-type weight in each of the two guideways disposed adjacent to the handle, throat and frame of the racket. A power swing moves the balls into a more-or-less outward position. The movable weight or force is relatively easy to retain and release at the disposal or consent and discretion of the user of the racket.