Djokovic finds way to 'survive' on US Open return

Novak Djokovic faced a "physical struggle" in the US Open first round due to lack of match practice, despite a victory over Learner Tien. Djokovic, 38, had not played since Wimbledon in early July and had a drop in performance during the match. He mentioned struggling in long exchanges and recovery but denied any injury, attributing the challenge to rustiness from the 6-week break.