Gizmos to help your serve….maybe
For probably as long as tennis has been a sport, there have been gizmos designed to help improve your game. Some may work for you, and then some may end up on the top shelf of the closet, never to be seen or used again. Today we have two products designed to improve the serve, and they look remarkably similar.
And the other is the Ace Trainer.
The standard disclaimer applies here: "Your results may vary!"
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