FILE - In this July 3, 2010, file photo, Serena Williams of the United States, hits a forehand return to Russia's Vera Zvonareva during their women's singles final at the All England Lawn Tennis Championships at Wimbledon. Williams has pulled out of the U.S. Open because she is still recovering from cutting her foot last month. Her agent and the U.S. Tennis Association confirmed her withdrawal Friday, Aug. 20, 2010. (AP Photo/Alastair Grant, File)
