The ADA Starball Tennis Game can be played indoors or outdoors on a badminton, pickle-ball, or tennis court. The game is a mini version of tennis and is a simple method for teaching tennis. It is similar to the “Soft Tennis Game” played in Japan due to limited space. The ADA Starball Tennis Ball is a fluff sponge ball that bounces like a tennis ball and comes off the racket like a tennis ball but only travels half the distance. Call -1-800-234-0460 for rules and drills.