Aim 4 feet to 8 feet out from the side wall, and not any higher. If it is high enough, the ball rebounds off the back wall where your opponent can return it. Do not hit the ball too close to the side wall, either. It pops out and can give your opponent a great set up. Cross court pass shot Another good offensive shot is the cross court pass shot. Never trade water with supplements like salt and potassium tablets. Avoid protein rich and fatty foods like beef before stepping onto your racquetball battlefield as it will make your body busy digesting such consumption and will leave you with less energy to work with. Whole wheat bread and macaroni which are rich in complex carbohydrates are the ones to ingest since they can be easily digested and converted to energy. These lines along with the service line, side wall, and short line forms the doubles box wherein the doubles partner that is not in serving position stands during the actual serve. The other set of lines is 36 inches from the side wall. These lines combine with the service and short lines in order to mark an area that the server must not enter if he intends to make a drive serve between himself and the nearest side wall. Natural expansive arm movements (even simple grip movements) can cause pain and aggravate the injury. Follow your doctor s advice. Next, check with your racquetball expert for improper technique in racquet handling. Is your grip wrong? What about the size and type of your racquet? Shoulder protection Shoulder injury is caused by using the shoulders and not correctly using the side of the body in swinging your racquet. The fast-paced action is kicked off by a service. The designated server must initially bounce the ball on the floor before hitting it directly to the direction of the front wall. The player must make sure that the hit is made beyond the short line to avoid a fault. The ball must then make contact with only one side wall before reaching the floor again as when both side walls are hit a fault called three wall serve is committed. If the ball bounces in front of or on the second solid line of the service area the player commits a short serve. A long serve occurs when the ball reaches the back wall before bouncing. When a served ball initially hits the front wall and then on the rebound phase comes in contact with both side walls before making a bounce a three wall serve is called.