Developing speed and power in your serve is the first step to a great serve but once you've worked on those aspects, the next step is to optimize. Making sure you're in the right position to hit the most powerful serve can be difficult if you don't know what you're looking to correct.
Online Tennis Instruction's coach Florian Meier shows you the most important power position you need to get into on your serve.
He looks at Roger Federer, Juan-Martin Del Potro, Novak Djokovic, and Madison Keys - all great servers that get into this critical serve power position.
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