Rafael Nadal is in a happy mood after defeating South Africa’s Kevin Anderson to win a third US Open and 16th Grand Slam.

In a one-sided US Open final on Sunday, the world number one defeated South Africa's world number 32, 6-3, 6-3, 6-4.

"In terms of results, this has been one of the best seasons of my career, of course," Nadal said.

"I have been winning titles, playing three finals of Grand Slams, so that's a lot. That's so difficult. The other slam that I was not in the final, I lost the match 15-13 in the fifth to be in the quarterfinals.

"So was very competitive year for me. And on clay, I won almost every match. Of course is an emotional season because I have been through tough moments in terms of injuries."

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It was really a great year for the Spanish professional tennis player who opened his season by playing at the Brisbane International for the first time, where he reached the quarterfinals before losing to Milos Raonic in three sets.

He lost the Australian Open to Roger Federer in five sets. However, he won his 29th Masters 1000 title in Monte Carlo before going ahead to win his 18th ATP 500 title in Barcelona without dropping a set.

The 31-year-old went on to win a record tenth French Open title, his first since 2014, ending his three-year drought in Grand Slams.