Aaron Baddeley shot a final-round 69 to win the Northern Trust Open by two shots in California.
The Australian finished on 12 under par, clear of his closest challenger Vijay Singh, after four birdies and a double bogey at Pacific Palisades today.
The Fijian also also went round in 69, but his challenge was undermined by successive bogeys at the 12th and 13th holes.
Baddeley looked like he might blow his chances when he carded a six at the par-four 12th, but he birdied the next hole to get back on track for his first victory in four years.
American Kevin Na was third on nine under after he could only manage an even par final round of 71.
Na carded four birdies and four bogeys in an up-and-down round.
Jimmy Walker, Robert Allenby and Ryan Moore finished a shot further back. Walker and Allenby both went round in 68 today – Allenby’s might have been even better as he was three under after two holes – with Moore carding a 69.
Fred Couples’ challenge faded on the final day, the 51-year-old finishing with a 73 to end on seven under.
South Korea’s KJ Choi joined him in a tie for seventh place thanks to his best round of the tournament, a 68.
England’s Justin Rose was the highest European finisher on six under, alongside JJ Henry and David Duval.
Rose finished a consistent four days with a second successive 70, having opened with two rounds of 69.
Phil Mickelson finished a disappointing tournament on one under in a tie for 35th.