Jamie Donaldson won his first title of the year after beating Clement Sordet of France and defending champion Lee Westwood by three strokes in the final round of the Thailand Championship at the Amata Country Club on Sunday.

The No. 68-ranked Donaldson rallied from two shots behind at the start of the day to shoot a final-round 65 that featured nine birdies and two bogeys for an overall 21-under-par 267 to win the title. The victory gives the Welshman one of four berths into next year's British Open.

Third round leader Sordet, who turned professional just six months ago, showed signs of nerves and struggled with his putts before signing off with a 70 for a 270.

Westwood, the 2011 and 2014 champion, shot a bogey-free 67.