Over the last twelve years, Stephan Ehritt-Vanc and Andreea Ehritt-Vanc, founders of the Pro-M International Tennis Academy, have played in or coached several players in more than sixty Grand Slams. In their guidebook, Pro Rules, they offer proven principles and a set of values that can help tennis players of all ages improve their game, achieve goals, and ultimately maximize their potential. Presented through five main elements--experience, acceptance-action response, respect, real self-confidence, and mastering the zone--Pro Rules guides tennis players to not only control their physical...