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DUBAI, UNITED ARAB EMIRATES - FEBRUARY 27: Roger Federer of Switzerland plays a forehand during his match against Benoit Paire of France on day two of the ATP Dubai Duty Free Tennis Championship on February 27, 2017 in Dubai, United Arab Emirates. (Photo by Tom Dulat/Getty Images)

DUBAI, UNITED ARAB EMIRATES - FEBRUARY 27: Roger Federer of Switzerland plays a forehand during his match against Benoit Paire of France on day two of the ATP Dubai Duty Free Tennis Championship on February 27, 2017 in Dubai, United Arab Emirates.  (Photo by Tom Dulat/Getty Images)