( CNN ) -- U.S. Open champion Novak Djokovic has vowed to win the French Open -- the only major championship he failed to win this year -- and in the process complete a career Grand Slam . The 24-year-old Serb , talking to CNN after his four-set victory over Spain 's Rafael Nadal at Flushing Meadows , believes his form is so good he can break Nadal 's virtual monopoly on the clay court event . `` It is going to take a lot of effort . I do n't think that I need to change anything specific in my game , '' Djokovic said . `` I need to believe . I need to get out there and go for my shots . I need to maintain that . It is not an easy thing to do . Clay ... is a slower surface in the sport and requires a different approach and Nadal has been winning the French Open for so many year in a row . Can anybody break the dominance of Djokovic ? `` It is going to be difficult to win against him on that tournament . But I am confident that I have a better chance than I ever did next year . '' Djokovic 's victory in the U.S. Open was just the tip of what has been a remarkable year . It is his third Grand Slam of 2011 following his triumphs at Wimbledon and the Australian Open . In total he has won 10 tournaments , playing 66 matches . He has lost just twice this year . `` It will be a big challenge to do even half what I done this year for 2012 , '' he told CNN . `` I 'm still very young , very much motivated every time I step on the court . I have a huge will to win and this is something that keeps me going and I 'll try and win as many majors as I can . '' Reflecting on an almost perfect 2011 , Djokovic believes that his incredible run has helped him win an advantage against the two players he views as his main rivals . `` It is obvious it has been the best year of my career , '' Djokovic told CNN . `` I think I matured as a player on the court , I have much more self belief . I 'm using the confidence I had from the incredible run this year . When you are winning that many matches you obviously feel more comfortable on the court . `` When I 'm playing my big rivals Federer and Nadal I 'm stepping on the court and wanting to be aggressive and take my chances . It has been a dream run and a dream year and I 'm enjoying every single moment of it . '' Djokovic also described the moment when he saved two match points against Federer in the semifinals , a moment that turned the match and the tournament in his favor . `` It is hard to say that I have been very relaxed in that moment because I was two match points down and very close to losing and going home , '' he recalled . `` This is what happens at this level . When you 're playing great champions like Federer and Nadal the guys are always playing their best at the later stages of major events . `` They have been so dominate in the last couple few years . You need to come up with those shots . `` I closed my eyes and hit the ball as hard as I could , and luckily for me it went in . ''
Novak Djokovic speaks to CNN 's World Sport . The Serbian tennis star is the first man in history to win four Wimbledon singles titles and a record eight Grand Slam titles. He has won three of the four Grand Slams this year . He describes 2011 as the `` best year of my career ''