Tennis, more so than basketball or football, is a game of physics (angles, spin, torque, velocity, force, vectors), played with athleticism and high precision on a frustratingly small court. And thus tennis fans, more so than those of basketball or football, obsess about technique. We daydream, for example, about the effortless way the perfectly-directed momentum of a racquet-head imposes a trajectory upon a yellow felt ball. This is a book for tennis fanatics looking to geek out over technique, or for a gift-giver to bind the tennis fanatic in his or her life to undying loyalty.