MELBOURNE, AUSTRALIA - JANUARY 26: Petra Kvitova of Czech Republic hits a return to Maria Sharapova of Russia during Australian Open tennis tournament, January 26, 2012 in Melbourne, Australia.
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MELBOURNE, AUSTRALIA - JANUARY 26: Petra Kvitova of Czech Republic hits a return to Maria Sharapova of Russia during Australian Open tennis tournament, January 26, 2012 in Melbourne, Australia.