Sep 4, 2016; New York, NY, USA; Novak Djokovic of Serbia celebrates after his match against Kyle Edmund of Great Britain (not pictured) on day seven of the 2016 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Djokovic won 6-2, 6-1, 6-4. Mandatory Credit: Geoff Burke-USA TODAY Sports