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PARIS, FRANCE - NOVEMBER 01: Winner, Novak Djokovic (L) of Serbia shakes hands with Kei Nishikori of Japan after their semi final match during day 6 of the BNP Paribas Masters held at the at Palais Omnisports de Bercy on November 1, 2014 in Paris, France. (Photo by Dean Mouhtaropoulos/Getty Images)

PARIS, FRANCE - NOVEMBER 01:  Winner, Novak Djokovic (L) of Serbia shakes hands with Kei Nishikori of Japan after their semi final match during day 6 of the BNP Paribas Masters held at the at Palais Omnisports de Bercy on November 1, 2014 in Paris, France.  (Photo by Dean Mouhtaropoulos/Getty Images)