Rafael Nadal feels that capturing the U.S. Open to complete a career Slam has taken a weight off his shoulders.

"I thought that this Grand Slam would be very difficult for me to win," the Telegraph quoted Nadal as saying the morning after his win. "Maybe if I had not done it this year or in the next two years, it could have become an obsession, and that could have made it more difficult for me to do it.

"I never imagined that I would win all the four Grand Slams, but now I have. And so maybe in the future I will be more relaxed when I play."