Andy Roddick returns a shot to Argentina's Juan Martin Del Potro in the fourth round of play at the 2012 US Open tennis tournament, Tuesday, Sept. 4, 2012, in New York. (AP Photo/Darron Cummings)
Andy Roddick returns a shot to Argentina's Juan Martin Del Potro in the fourth round of play at the 2012 US Open tennis tournament, Tuesday, Sept. 4, 2012, in New York. (AP Photo/Darron Cummings)