 Three out of three Grand Slams. Novak Djokovic is one of the Wimbledon men's single championship defeating Mathieu Berettini of Italy 6-7, 6-4, 6-4, 6-3. The victory gives Djokovic the world's top ranked tennis player his 20th Grand Slam singles title, tying him with Roger Federer and Rafa Nadal. Just as important, it also gives him his third Grand Slam title of the year and positions him to become the first man in more than half a century to win the calendar Grand Slam when he contests at the US Open later this summer.