Watney gets his own back on Blue Monster

Watney holes the winning putt on the 18th

American Nick Watney won the biggest title of his career at the World Golf Championship-Cadillac Championship after a flawless final-round puttng display on Doral's TPC Blue Monster course.

Watney recorded just 22 putts in a final-round 67 to finish two shots clear of overnight leader Dustin Johnson on 16-under par.

The in-form Californian, who had notched seven consecutive top-10s before this week, rolled in two key 20-foot par putts on the 13th and 15th and then fist-pumped his way to victory when pouring in a 12-foot birdie putt on the treacherous 18th.

With a one-shot lead playing the last - a hole which he had double-bogeyed 24 hours earlier after driving into the lake, to fall out of a tie for the overnight lead - Watney showed tremendous courage to send a 316-yard drive down the right-centre of the fairway, before holing just one of three final-day birdies at the last.

And no one could grudge the 29-year-old of winning his third PGA Tour title after narrowly losing out in this event to Phil Mickelson in 2009, when his 30-foot birdie putt on the final hole came up a rotation short of a playoff.

"It's the biggest day of my golfing career," said Watney. "With the way yesterday ended and two years ago, it means a whole lot, and I'm very, very excited."

"Top-10 finishes are nice but winning is what counts out here, and that's how you're measured."

The victory vaults Watney into second place in the FedExCup Standings, moving him closer to a deserved top-10 world ranking.

"All I can do is try to keep improving, hopefully keep winning tournaments," said Watney.