Michael Russell, of the United States, returns the ball to Nicolas Almagro, of Spain, on Thursday, April 10, 2014, during the U.S. Men's Clay Court Championship tennis tournament in Houston.Almagro defeated Russell 6-2, 6-3. (AP Photo/Houston Chronicle, Bob Levey)

Houston Tennis

Michael Russell, of the United States, returns the ball to Nicolas Almagro, of Spain, on Thursday, April 10, 2014, during the U.S. Men's Clay Court Championship tennis tournament in Houston.Almagro defeated Russell 6-2, 6-3. (AP Photo/Houston Chronicle, Bob Levey)

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