FILE - In this Aug. 31, 2011, file photo, Jack Sock, of the United States, returns a shot to MarcGicquel of France, during the U.S. Open tennis tournament in New York. Sock qualified for the French Open tennis tournament, which starts Sunday. AP Photo/Julio Cortez, File)
FILE - In this Aug. 31, 2011, file photo, Jack Sock, of the United States, returns a shot to MarcGicquel of France, during the U.S. Open tennis tournament in New York. Sock qualified for the French Open tennis tournament, which starts Sunday. AP Photo/Julio Cortez, File)
