The tennis world became a brighter place when Billie Jean King took the court and now you can tap into her prowess by trying out the Eye Coach. You will only need about 10 feet of room to get the most out of this training tool, which makes it perfect for your backyard or living room. It’s also easily storable so you won’t need to take up extra space in your apartment. The Eye Coach will help you practice your control, timing, power while giving you a great cardio workout. Once you hit the ball, it will quickly come back at you, keeping you literally on your toes. You can practice up to 17 shots as well as topspin and underspin. The Eye Coach will be the closest thing you’ll get to an in-person match.