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MADRID, SPAIN - MAY 05: Kei Nishikori of Japan in action against Richard Gasquet of France in their third round match during day six of the Mutua Madrid Open tennis tournament at the Caja Magica on May 05, 2016 in Madrid,Spain (Photo by Clive Brunskill/Getty Images)

MADRID, SPAIN - MAY 05:  Kei Nishikori of Japan in action against Richard Gasquet of France in their third round match during day six of the Mutua Madrid Open tennis tournament at the Caja Magica  on May 05, 2016 in Madrid,Spain  (Photo by Clive Brunskill/Getty Images)