Serbian tennis player Novak Djokovic spoke about how he felt after defeating American Learner Tien (score reported as 6–1, 7–6, 6–2) in the first round of the US Open.
Novak Djokovic
Good thing, two days off now. But yeah, it's slightly a concern. I don't know. I don't have any injury or anything. I just struggled a lot to stay in long exchanges and recover after points.
In the second round the 24-time Grand Slam champion will face American Zachary Svajda, who is ranked 145th in the ATP rankings.
