2018 US Open Tennis Tournament- Day Fourteen. Novak Djokovic of Serbia reacts to his team during his match against Juan Martin Del Potro of Argentina in the Men's Singles Final on Arthur Ashe Stadium at the 2018 US Open Tennis Tournament at the USTA Billie Jean King National Tennis Center on September 9th, 2018 in Flushing, Queens, New York City. (Photo by Tim Clayton/Corbis via Getty Images)
