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DUBAI, UNITED ARAB EMIRATES - FEBRUARY 24: Roberto Bautista Agut of Spain in action against Hyeong Chung of Korea during day five of the ATP Dubai Duty Free Tennis Championship at the Dubai Duty Free Stadium on February 24, 2016 in Dubai, United Arab Emirates. (Photo by Warren Little/Getty Images)

DUBAI, UNITED ARAB EMIRATES - FEBRUARY 24:  Roberto Bautista Agut of Spain in action against Hyeong Chung of Korea during day five of the ATP Dubai Duty Free Tennis Championship at the Dubai Duty Free Stadium on February 24, 2016 in Dubai, United Arab Emirates.  (Photo by Warren Little/Getty Images)