Retief Goosen secured a top five finish as former World Number Two Jim Furyk grabbed his 14th US PGA Tour victory, but first since 2007, when he won the Transitions Championship by one shot from Korean K J Choi in Florida.
After a thunderstorm delay of almost four hours the 39 year old American scored a last round 69, two under par, over the Copperhead course at Palm Harbor's Innisbrook Resort.
Four birdies in five holes from the second by twice winner Choi cancelled out Furyk's three stroke overnight lead, but the 2003 US Open Champion responded in fine fashion.
With birdies of his own at the eighth, tenth and 12th he was three clear again.
Another birdie came at the long 14th, but either side of that came bogey fours to leave him two in front and he had to work hard for pars on the 16th and 17th.
That enabled him to make bogey after a near shank from the trees on the last and still win with a 13 under aggregate of 269.
Goosen shot a 71 for fifth place, Luke Donald's 71 put him in a tie for sixth, while Padraig Harrington, the halfway leader, climbed back to joint second with an opening birdie, but fell back to joint eighth on six under after a 72.
Justin Rose had a 71 to be in a share of 13th place one further back and so is still outside the world's top 50 a week before they are invited to the Masters Tournament at Augusta.
The former European Tour Number One, who was third at the Honda Classic two weeks ago, will try again in the Arnold Palmer Invitational at Bay Hill starting on Thursday.
Furyk admitted: "Nerves got me, to be honest with you. I have a habit of making it tough for myself.
"The only time I haven't was the US Open."
