American Phil Mickelson shot a final round 70 for a two-shot win over Jeff Quinney at the PGA's 6.2 million dollar Northern Trust Open.
Mickelson, who grew up in southern California, posted his first win of the season finishing at 12-under 272 at the Riviera Country Club course.
It was his 33rd career win and first victory at Riviera -- a tournament he first played as a 17-year-old high school student.
"It is pretty cool," said Mickelson, who earned 1.1 million dollars. "I've wanted to win here for a long time. It was a tough fight with Jeff. He played really well."
Mickelson duelled Quinney early in the round but he was the steadier of the two on the back nine.
World No. 1 Tiger Woods once against skipped the Riviera event, one of the few places he has been unable to dominate.
Ireland's Padraig Harrington and England's Luke Donald each fired 68s yesterday to finish in a tie for third five shots behind Mickelson.
This was the second event this year that Mickelson put himself in a position to win.
At the FBR Open two weeks ago, Mickelson had a one-stroke lead after his final round, but J B Holmes made a birdie on the final hole to force a playoff, which he won on the first hole.
Last year at this event, Mickelson needed a par on the 18th hole to avoid a playoff.
He failed to do that and lost in a playoff to Charles Howell. This time, Mickelson minimized his mistakes and took a three-shot lead to the final hole.