NEW YORK NEW YORK - AUGUST 30: Ball kids use towels to dry raindrops on the court surface during the Men's Singles First Round match between Novak Djokovic of Serbia and Mariano Navone of Argentina on Day One of the 2026 US Open at USTA Billie Jean King National Tennis Center on August 30, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Julian Finney/Getty Images)