China's Li Na celebrates after defeating Russia's Maria Sharapova in their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 24, 2013. (AP Photo/Aaron Favila)

Associated Press
China's Li Na celebrates after defeating Russia's Maria Sharapova in their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 24, 2013. (AP Photo/Aaron Favila)
China's Li Na celebrates after defeating Russia's Maria Sharapova in their semifinal match at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 24, 2013. (AP Photo/Aaron Favila)
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