Russia's Maria Sharapova serves to China's Li Na during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 24, 2013. (AP Photo/Dita Alangkara)

Associated Press
Russia's Maria Sharapova serves to China's Li Na during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 24, 2013. (AP Photo/Dita Alangkara)
Russia's Maria Sharapova serves to China's Li Na during their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 24, 2013. (AP Photo/Dita Alangkara)
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