South African golfer Charl Schwartzel has won the Thailand Championship.

The 28-year-old shot a final-round 65 to win the tournament by 11 shots, finishing 25-under overall after eight birdies in his final round.

American Bubba Watson and Thitiphun Chuayprakong of Thailand finished joint-second, while Spain's Sergio Garcia was two shots further back in fourth.

"Winning is not as easy as everyone makes it out to be," said Schwartzel. "It's been quite hard work and it's been a difficult year, especially in the middle.

"It's nice to put things in place and get the win I've been looking for."

This was Schwartzel's first title since the 2011 Masters Tournament at Augusta, Georgia.