Serena Williams, Venus Williams

Venus and Serena Williams will be back on the court for doubles later Tuesday morning. (Elise Amendola -- Associated Press)

Venus and Serena Williams will be back on the court for doubles later Tuesday morning. (Elise Amendola — Associated Press)

at the All England Lawn Tennis Club in Wimbledon, London at the 2012 Summer Olympics, Monday, July 30, 2012. (AP Photo/Elise Amendola)