Abstract: A racquet sports training device which can be used by one person alone, either indoors or outdoors, and which enables the user to hit a ball with the racquet and have the ball returned to him thereby allowing repeated hitting and even while the user is on the run. An elastic cord is connected at one end to a ball of the type for hitting by the racquet during playing of the particular sport, and there is provided a component for releasably connecting the opposite end of the cord to the racquet. A swivel is connected to the cord in a manner preventing tangling of the cord during use of the training device. As a result, the user can practice hitting the ball with the racquet, and after each time the ball is hit in a direction away from the racquet the elastic cord returns the ball in a direction toward the racquet.