NEW YORK, NEW YORK - AUGUST 21: David Goffin of Belgium practices ahead of the 2019 US Open at USTA Billie Jean King National Tennis Center on August 21, 2019 in New York City. (Photo by Steven Ryan/Getty Images)
NEW YORK, NEW YORK - AUGUST 21: David Goffin of Belgium practices ahead of the 2019 US Open at USTA Billie Jean King National Tennis Center on August 21, 2019 in New York City. (Photo by Steven Ryan/Getty Images)