Many of the vets in there have no mental or serious physical issues.

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No one doubts that diet plays a role in the physical well-being of all student athletes and particularly those with acute physical issues.

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But a surprise four-set defeat by Switzerland's Stanislas Wawrinka followed in the third round at Flushing Meadows, with the Briton beset by physical issues that he was unable to explain immediately afterwards.

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