Novak Djokovic is rarely a boring star to watch on the tennis court, but his opponents have often spoken of his kind-hearted nature throughout his long and illustrious career

By Shrivathsa Sridhar LONDON (Reuters) -Seven-time Wimbledon champion Novak Djokovic was made to work hard after a strong start as he began his bid for a 25th Grand Slam title by beating unseeded Frenchman Alexandre Muller 6-1 6-7(7) 6-2 6-2 to reach the second round on Tuesday.

Novak Djokovic has been visited twice by a doctor for a stomach issue and given what he called “miracle pills” during a 6-1, 6-7 (7), 6-2, 6-2 victory over Alexandre Muller in Wimbledon’s first round.