
Novak Djokovic, of Serbia, gets medical treatment during the first round of the U.S. Open tennis championships against Mariano Navone, of Argentina, Sunday, Aug. 30, 2026, in New York. (AP Photo/Frank Franklin II)

Novak Djokovic, of Serbia, gets medical treatment during the first round of the U.S. Open tennis championships against Mariano Navone, of Argentina, Sunday, Aug. 30, 2026, in New York. (AP Photo/Frank Franklin II)