NEW YORK (AP) — 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.

Djokovic shook off a back problem early in the match to beat Cam Norrie on Friday night and, at 38, become the oldest man to reach the fourth round of the U.S. Open since Jimmy Connors was the same age in 1991.

Djokovic pulled away to win 6-4, 6-7 (4), 6-2, 6-3, helped by hitting 18 aces in what he said was his best serving performance of a tournament in which he needed treatment for a blister on his big toe in the first round and for his back in the third.

“The wear and tear on the body all these years is taking a toll, and I’m aware of it, but I’m resisting it,” Djokovic said. “I’m trying to do my best to still be out there com

See Full Page