Petra Kvitova of the Czech Republic wipes her forehead while playing Tsvetana Pironkova of Bulgaria during their women's singles match at the Sydney International tennis tournament in Sydney, Thursday, Jan. 9, 2014.(AP Photo/Rick Rycroft)

Australia Tennis Sydney International

Petra Kvitova of the Czech Republic wipes her forehead while playing Tsvetana Pironkova of Bulgaria during their women's singles match at the Sydney International tennis tournament in Sydney, Thursday, Jan. 9, 2014.(AP Photo/Rick Rycroft)

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