Novak Djokovic Shakes Off a Back Problem and Reaches the 4th Round of the US Open at 38

Novak Djokovic, of Serbia, stretches against Cameron Norrie, of Great Britain, during the third round of the U.S . Open tennis championships, in New York, on Aug. 29, 2025. Adam Hunger/AP Photo

NEW YORK—Novak Djokovic believes his tennis is still good enough to compete for a 25th Grand Slam title.

It’s his body that has to show it can hold up.