Andy Roddick waves to fans after his loss to Argentina's Juan Martin Del Potro in the quarterfinals during the 2012 US Open tennis tournament,  Wednesday, Sept. 5, 2012, in New York. Roddick said he would retire after the match. (AP Photo/Darron Cummings)

Photo by: Darron Cummings

Andy Roddick waves to fans after his loss to Argentina's Juan Martin Del Potro in the quarterfinals during the 2012 US Open tennis tournament, Wednesday, Sept. 5, 2012, in New York. Roddick said he would retire after the match. (AP Photo/Darron Cummings)