Sep 5, 2016; New York, NY, USA; Venus Williams of the United States reacts after missing a shot against Karolina Pliskova of the Czech Republic (not pictured) on day eight of the 2016 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Pliskova won 4-6, 6-4, 7-6(3). Mandatory Credit: Geoff Burke-USA TODAY Sports