Novak Djokovic battles to win first round match at US Open | Tennis News

Djokovic, who hasn’t won a Grand Slam title in two years, was far from his best against Learner Tien in the opening round at Flushing Meadows.

Novak Djokovic delivered a lesson in Grand Slam tenacity to Learner Tien in the first round of the US Open, as he battled past the American teenager 6-1, 7-6(3), 6-2 and launched his latest quest for a record 25th major title.

Competing in his first singles match since reaching the Wimbledon semifinals last month, and swapping the whites for a sleek…