The Rotator Cuff is a set of small muscles that encompass the shoulder. It is extrememly important because without it shots like the serve and forehand would be virtually impossible. By strengthening the rotator, one can help prevent future shoulder injuries. When I was in Austria coaching Amer Delic of ADNA, we had a chance to spend the week training, competing in doubles, and practicing with a tennis player by the name of Andy Roddick. Andy took some time to show me one of the big reasons his serve is so explosive. For approximately 10 minutes he showed me his rotator cuff routine that helps him add miles per hour to his serve, as well as keep it going year in and year out. In this video is Dr. Mark Frisk. Mark is one of the top Senior Tennis Players in the world and is a fitness enthusiast. After years of medical training and being a world class athlete, he understands the importants of strength training because without it, you will not be as powerful as you could be.