Novak Djokovic is a Serbian professional tennis player widely regarded as one of the greatest tennis players of all time. Djokovic has won 12 Grand Slam singles titles, the fourth most (equal with Roy Emerson) in history, and held the No. 1 spot in the ATP rankings for a total of 223 weeks. In majors, Djokovic has won six Australian Open titles (the only male player to win 3 consecutive Australian Open during open era), three Wimbledon titles, two US Open titles and one French Open title. In 2016, he became the eighth player in history to achieve the Career Grand Slam; by winning the 2016 French Open, Djokovic became the third man to hold all four major titles at once, the first since Rod Laver in 1969, and the first ever to do so on three different surfaces. Djokovic holds the highest match winning rate (82.8%) in the Open Era, as of July 2017.