NEW YORK, NY - SEPTEMBER 07: Karolina Pliskova of the Czech Republic reacts against Ana Konjuh of Croatia during their Women's Singles Quarterfinal match on Day Ten of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 7, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)
