Li Na of China, left, shakes hands with  Flavia Pennetta of Italy at the net, after Li won their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 21, 2014.(AP Photo/Andrew Brownbill)

Australian Open Tennis

Li Na of China, left, shakes hands with Flavia Pennetta of Italy at the net, after Li won their quarterfinal at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 21, 2014.(AP Photo/Andrew Brownbill)

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