"John Roddick" is an United States/American former professional tennis player and the current head tennis coach at the University of Oklahoma.

More John Roddick on Wikipedia.

One of the reasons I'm here is to help him relax and enjoy tennis. Andy has a lot of energy and you have to get that energy out.

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This weekend, he finally put it together consistently. The surface helps, because he's really comfortable on grass. It takes him only 20 minutes to adjust to playing on grass.

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