China's Li Na tries to get up after falling 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/Ryan Pierse,Pool)

Associated Press
China's Li Na tries to get up after falling 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/Ryan Pierse,Pool)
China's Li Na tries to get up after falling 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/Ryan Pierse,Pool)