Djokovic, who hasn’t won a Grand Slam title in two years, was far from his best against Learner Tien in New York.

Novak Djokovic delivered a lesson in grand slam tenacity to Learner Tien in the first round of the US Open, beating the American teenager 6-1, 7-6 (3), 6-2

Gegen einen Gegner, der halb so alt ist wie er, gewinnt Novak Djokovic nach einigen Mühen. Er will in New York dieses Jahr einen neuen Grand-Slam-Rekord aufstellen.

Djokovic, who hasn’t won a Grand Slam title in two years, was far from his best against Learner Tien in New York.

NEW YORK: 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…

Nole Djokovic soffre ma supera il giovane statunitense Learner Tien e passa al secondo turno degli Us Open. (ANSA)

Novak Djokovic says he "did not feel that great" as he came back from a set down to beat American qualifier Zachary Svajda and reach the US Open third round.