Novak Djokovic gets US Open campaign under way with battling first-round win

• Serb manages physical issues to beat Tien 6-1, 7-6 (3), 6-2

• Djokovic is aiming for a record 25th grand slam title

In his first competitive outing after a six-week hiatus, there were times when an increasingly frustrated Novak Djokovic looked dead on his feet. However, in the most important moments of his turbulent first round match against American teenager Learner Tien, Djokovic worked through his physical discomfort and then held his nerve in the decisive moments to win 6-1, 7-6 (3), 6-2 and reach the second round of the US Open.

Even at 38 years old, Djokovic has been the third best player at the grand slam tournaments this year, reaching the semi-final of all three prior events. However, his ageing body has struggled to handle the physicality required to succeed in the best of five sets format. After his straight sets loss to Jannik Sinner at Wimbledon, Djokovic cast doubt on his ability to remain fresh and healthy deep in the grand slam tournaments at his age.