Stan Wawrinka defeated world number one Novak Djokovic to claim a third Grand Slam title and became the oldest  US Open men's champion in 46 years.

Wawrinka, the 31-year-old third seed, triumphed 6-7 (1/7), 6-4, 7-5, 6-3 after almost four hours of high intensity tennis. He even held his nerve when the final threatened to erupt into controversy after Djokovic twice called medical timeouts in the fourth set.

Djokovic, the No. 1 seed and defending champion, said that, "I lost my nerves in the important moments. He kept his cool. I think that's what decided the match."

"I guess sometimes it happens, even though you have the experience and know what to do. Just the heat of the moment and importance of the match, I guess, was too strong for me at certain periods of the match. Just if you lose your cool, the match can go away," he said.

"He was more courageous, because he stepped in and played aggressive," Djokovic said, "where I was kind of more waiting for things to happen." "Terrible conversion of the break points," Djokovic said. "Just terrible from my side."

Djokovic said that, "Winning two out of four Grand Slams is a pretty good year, and playing another final - I have no complaints. Obviously I wish that I could win another title, but this is what it is. You have to shake hands and accept the loss from a better player and move on."

"It's not the first time, it's not the last time I'm going to lose a match. Big match," he continued. "Hopefully I can learn from it. Hopefully I can get better, because that's the cycle of life, I guess, for us athletes."

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Nandini