Serena Williams of the U.S. confers with her sister, Venus Williams (L), in the women's doubles tennis gold medal match against Czech Republic's Andrea Hlavackova and Lucie Hradecka at the London Olympic Games, August 5, 2012. REUTERS/Stefan Wermuth (BRITAIN - Tags: OLYMPICS SPORT TENNIS)

Serena Williams of the U.S. confers with her sister, Venus Williams, in the women’s doubles tennis gold medal match against Czech Republic’s Hlavackova and Hradecka at the London Olympic Games