Beginning tennis players miss their sweet spot on their swing 90% of the time. Even the pros only hit the sweet spot on 50% of their swings. With the Billie Jean King Eye Coach Training System, you can actually train your brain to automatically focus on the correct spot of ball contact, dramatically improving your swing. It's why we're one of the most trusted tennis training systems in the world and used by trainers for all levels of students and pros.In any sport where the player needs to strike a ball, our muscle memory is essential to performance. Great ball-striking technique can only be achieved with repetition of the correct swing over and over again. We invented the Eye Coach to be an easy way for players to practice their ball strike every day, whether or not they have time to hit the courts. Just 5 minutes of swinging practice with the Eye Coach every day will help retrain your eye focus, so your brain and your body learn to seek out the sweet spot of contact instinctively. It's great for beginning players to help them learn correct playing habits and is useful for intermediate and pro players who want to fix bad habits or get a great warm-up before a game. With the Eye Coach's portability, it's easy to keep your game up no matter the season.Using the Eye Coach is simple. The sturdy, portable machine is only 13 pounds, and it folds up to fit easily in a racket bag. Set up takes only 3 minutes, and you're ready to go. Take your Eye Coach to the driveway, the backyard, the beach, the gym, even on business trips. Many players use the Eye Coach to supplement their own coaching sessions, and trainers love the focus and confidence everyday use can give a player. We offer three sizes of Eye Coach to fit every player. The Junior System is for players under 4'2". The Pro System is for players over 4'2''. And the Family system can be adapted and easily adjusted for both sizes, so both kids and parents can see the benefits.