NEW YORK, NEW YORK - AUGUST 21: Grigor Dimitrov of Bulgaria trains prior to the Western & Southern Open at the USTA Billie Jean King National Tennis Center on August 21, 2020 in New York City. (Photo by Matthew Stockman/Getty Images)
NEW YORK, NEW YORK - AUGUST 21: Grigor Dimitrov of Bulgaria trains prior to the Western & Southern Open at the USTA Billie Jean King National Tennis Center on August 21, 2020 in New York City. (Photo by Matthew Stockman/Getty Images)