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NEW YORK, NEW YORK - AUGUST 26: Tereza Martincova of Czech Republic returns a shot during her women's singles first round match against Karolina Pliskova of Czech Republic during day one of the 2019 US Open at the USTA Billie Jean King National Tennis Center on August 26, 2019 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)

NEW YORK, NEW YORK - AUGUST 26: Tereza Martincova of Czech Republic returns a shot during her women's singles first round match against Karolina Pliskova of Czech Republic during day one of the 2019 US Open at the USTA Billie Jean King National Tennis Center on August 26, 2019 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Mike Stobe/Getty Images for USTA)