U.S. Open 2025: Novak Djokovic voices physical concerns after first-round win
Novak Djokovic fears his lack of physical conditioning may come back to haunt him as he chases a record 25th Grand Slam singles title at the US Open. The 38-year-old Serbian superstar made a winning start to his latest tilt at glory on Sunday, defeating US teenager Learner Tien 6-1, 7-6 (7/3), 6-2 in 2hr…