Donald Young serves the ball to Fernando Verdasco of Spain in the first set of their quarterfinal match in the U.S. Men's Clay Court Championship Friday, April 11, 2014, in Houston. (AP Photo/Pat Sullivan)

Houston Tennis

Donald Young serves the ball to Fernando Verdasco of Spain in the first set of their quarterfinal match in the U.S. Men's Clay Court Championship Friday, April 11, 2014, in Houston. (AP Photo/Pat Sullivan)

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