Vamas Rafa, Can he win again?

When considering some of the greatest players of the open era, one would be foolish not to consider Rafael Nadal somewhere on their list. Winner of 14 grand slams and numerous titles beyond that, he has made his mark on modern tennis. At only 29 years old, some say that he has been experiencing a premature exit from tennis stardom. Early exits from Wimbledon and the US Open, second and third rounds respectively, seem to be the focal points of his struggles this 2015 season.

With the conclusion of the US Open, it marked the first time in 10 years that he hasn't won a grand slam. Now this may be alarming to some, but 10 years of consistent winning will most definitely take its toll on a player. Now that doesn't mean he hasn't had some success this season. He has 3 titles between Argentina and Germany. Granted these titles were 250 and 500 level tournaments, they still show a potential that Nadal can live up to coming into the ATP World Tour Finals. We'll have to wait and see.

The Djoker: Novak Djokovic

The 2015 US Open champion Novak Djokovic reigns supreme this year. Winning 3 of the 4 grand slam titles, there's little in the way of stopping him. Despite a stunning loss to Stan Wawrinka at Roland Garros, Novak stayed positive to carry out a win in the US. This marks his 10th grand slam title. At 28 years old, there's no doubt that he will be a force to be reckoned with for years to come.

This begs the question. Will Novak one day be able to surpass the great Roger Federer in grand slam titles? Federer, currently at 17 slams, is still fighting for another, but Djokovic is steadily making his rounds to the top.

Novak's game and health habits contribute to his longevity in tennis. Taking stretching to new degrees for tennis players, he is one of the most flexible you will see on the tour.

This coupled with his gluten free diet has transformed him into a tennis machine. Follow the link to read up on the strict diet that he has said is responsible for his improvement over the years. From a menacing double backhand to immense recovery speed, Novak is geared with the the skills and ability to make a real shot at matching or even surpassing Federer's all time slam titles.

Check out some of the highlights from the 2015 US open and see how some of the greatest champions in the game fare off against one another.