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Serena Williams of the U.S. celebrates after winning the women's singles gold medal match against Russia's Sharapova at the All England Lawn Tennis Club during the London 2012 Olympic Games

Serena Williams of the U.S. celebrates after winning the women's singles gold medal match against Russia's Maria Sharapova at the All England Lawn Tennis Club during the London 2012 Olympic Games August 4, 2012. REUTERS/Stefan Wermuth (BRITAIN - Tags: OLYMPICS SPORT TENNIS)