Nigeria TV Info — Djokovic Voices Fitness Concerns Despite US Open Opening Win

Novak Djokovic has admitted he is worried about his physical conditioning as he pursues a record 25th Grand Slam singles title at the US Open.

The 38-year-old Serbian superstar began his campaign on Sunday with a convincing win over American teenager Learner Tien, securing a 6-1, 7-6 (7/3), 6-2 victory in two hours and 25 minutes on Arthur Ashe Stadium.

Despite the straight-sets triumph, Djokovic expressed concern that his fitness levels may become a challenge as the tournament progresses.

The world number one, who has endured a demanding season, said he would need to manage his energy carefully in order to maintain his pursuit of another historic milestone in New York.