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Damir Dzumhur Pictures
NEW YORK, NEW YORK - AUGUST 31: Damir Dzumhur of Bosnia and Herzegovina serves during his Men's Singles first round match against Novak Djokovic of Serbia on Day One of the 2020 US Open at the USTA Billie Jean King National Tennis Center on August 31, 2020 in the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)