Pimms, a popular English liqueur, is listed as "No. 1 Fruit Cup" on a drink menu at the All England Lawn Tennis Club at Wimbledon, in London, at the 2012 Summer Olympics, Wednesday, Aug. 1, 2012. Olympic branding regulations have restricted many familiar brand names from being shown in connection with the games. (AP Photo/Mark Humphrey)
Serena Williams of the United States celebrates her victory over Vera Zvonareva of Russia at the All England Lawn Tennis Club in Wimbledon, London at the 2012 Summer Olympics, Wednesday, Aug. 1, 2012. (AP Photo/Elise Amendola)
Serena Williams, left, and Venus Williams of the United States clasp hands as they compete against Sorana Cirstea and Simona Halep of Romania in women's doubles at the All England Lawn Tennis Club in Wimbledon, London at the 2012 Summer Olympics, Monday, July 30, 2012. (AP Photo/Elise Amendola)
Novak Djokovic of Serbia celebrates his victory over Andy Roddick of the United States at the All England Lawn Tennis Club in Wimbledon, London, at the 2012 Summer Olympics, Tuesday, July 31, 2012. (AP Photo/Elise Amendola)
Serena Williams of the United States returns a shot to Urszula Radwanska at the All England Lawn Tennis Club at Wimbledon, in London, at the 2012 Summer Olympics, Monday, July 30, 2012. (AP Photo/Mark Humphrey)
Christina McHale of the United States returns a shot to Ana Ivanovic at the All England Lawn Tennis Club at Wimbledon, in London, at the 2012 Summer Olympics, Saturday, July 28, 2012. (AP Photo/Mark Humphrey)