Dhaka, Sept. 4 -- Novak Djokovic, now 38, is back in the U.S. Open semifinals and aiming for a record 25th Grand Slam title. His next challenge is 22-year-old Carlos Alcaraz, with a potential final clash against world No. 1 Jannik Sinner, 23, if results fall in line.

It has been two years since Djokovic's last Slam win, the longest gap of his career. This season, he fell short in all three majors, hampered by a hamstring tear in Australia and a groin issue at Wimbledon. He only returned to action at Flushing Meadows after that setback.

The Serb, who owns 24 majors and 37 Slam final appearances, admits age is changing his approach. "I'm not sure how the body will feel, but I'll do everything to be ready," he said.

Djokovic rallies past ...