Petra Kvitová

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ASSOCIATED PRESS Maria Sharapova celebrates her 6-3, 6-3 semifinal win over Petra Kvitova at the French Open. Sharapova returned to the top of the world rankings with the victory.

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Petra Kvitova of the Czech Republic holds her trophy after defeating Russia's Maria Sharapova in the ladies' singles final at the All England Lawn Tennis Championships at Wimbledon, Saturday, July 2, 2011. (AP Photo/Anja Niedringhaus)

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ASSOCIATED PRESS Serena Williams acknowledges the crowd, after defeating Petra Kvitova of the Czech Republic in their women's singles semifinal on the Centre Court at the All England Lawn Tennis Championships at Wimbledon, Thursday, July 1, 2010.