Abstract: A folding ball diverter for use with a tennis net. The diverter is composed of a folded sheet of material that includes a pair of panels which are positioned at an angle to each other. A first of the panels is inclined upwardly and includes a low end that rests on the playing surface adjacent the net. A plurality of punched out tabs are connected to one of the panels and engage apertures in the other panel to hold the panels in the angular configuration. A tennis ball striking the net will fall downwardly into engagement with the first panel and be retained against the lower end of the net to prevent the ball from rolling back onto the court. The lower edge of the first panel can be provided with a plurality of connecting lugs which are connected to lugs on a second diverter located on the opposite side of the net.