China's Li Na falls for a second time during her match against Victoria Azarenka of Belarus in the women's final at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 26, 2013. (AP Photo/Aaron Favila)

Associated Press
China's Li Na falls for a second time during her match against Victoria Azarenka of Belarus in the women's final at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 26, 2013. (AP Photo/Aaron Favila)
China's Li Na falls for a second time during her match against Victoria Azarenka of Belarus in the women's final at the Australian Open tennis championship in Melbourne, Australia, Saturday, Jan. 26, 2013. (AP Photo/Aaron Favila)
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