Duffy Waldorf fired a final-round 10-under-par 62 to edge out long-time leader Steve Flesch at the National Car Rental classic in Florida yesterday.
The 38-year-old from Los Angeles rattled off six birdies on his first seven holes and then added another four after the turn to finish the tournament on 26 under, one shot ahead of Flesch.
It was Waldorf's fourth victory on the PGA Tour, having opened his account in 1995 and secured two more titles last year.
Flesch had gone into the final day with a two-shot advantage over Tiger Woods at the head of the leaderboard, but a 69 was not enough to give him his first win on the Tour.
Woods, chasing his 10th title of the year, also closed with a 69 to take third place on 23 under.
Waldorf said: "I had a good feeling about this week. I didn't think I was going to win, but I thought I was going to play well.
"I got myself into a good position after three days, but it's still not easy to come in with a low one today.
"The win is such a huge bonus, I never in my wildest dreams thought I could win this thing.
"The guys in front had a big lead, with Tiger Woods there and Steve Flesch I thought this is the time to play a good round and see where I can finish. Lo and behold, look what happened."