Tennis is fun to watch on TV but mastering it takes a lot of effort. The Spivo Audible Topspin Training System can help you improve your topspin. It lets you hear how much topspin you are playing, so you can get a better feel for your game. The louder the sound, the heaver the spin.
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With this training system, you can learn to hit better forehands and backhands. You can find out more about it here.
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