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AUCKLAND, NEW ZEALAND - JANUARY 13: Roberto Bautista Agut of Spain poses with the trophy following his Mens Singles Final win over Juan Martin Del Potro of Argentina during day six of the ASB Men's Classic at ASB Tennis Centre on January 13, 2018 in Auckland, New Zealand. (Photo by Phil Walter/Getty Images)

AUCKLAND, NEW ZEALAND - JANUARY 13:  Roberto Bautista Agut of Spain poses with the trophy following his Mens Singles Final win over Juan Martin Del Potro of Argentina during day six of the ASB Men's Classic at ASB Tennis Centre on January 13, 2018 in Auckland, New Zealand.  (Photo by Phil Walter/Getty Images)