Third round leader Justin Rose could only manage a 74 as American Gary Woodland claimed his maiden US PGA Tour triumph in the Transitions Championship at Innisbrook.
Rose took a one shot advantage into the final round and was tied for the lead until four straight bogeys from the seventh hole dropped him back.
The Englishman, seeking his third US PGA Tour title in under a year, finished five shots behind Woodland, whose four under par final round 67 moved him to 15 under overall and booked him a place at next month's Masters Tournament.
He finished a stroke ahead of Webb Simpson (69), three clear of US PGA Tour rookie Scott Stallings (70) and four in front of Brandt Snedeker (70).
Rose had to settle for a share of fifth spot along with Scotland's Martin Laird (70), Zimbabwe's Brendon de Jonge (73) and American trio Roland Thatcher (70), Chris Couch (71) and Marc Turnesa (66).
Woodland had an eventful back nine, picking up a shot at the tenth and dropping one at the 11th before surging into the lead with three straight birdies.
It looked like the nerves may be getting to him when he posted two successive bogeys, but he eagled the par three 17th and then holed a ten foot putt for par on the 18th.
Simpson then missed a 20 foot putt on the last hole and had to settle for second spot.
Spain's Sergio Garcia, playing his first regular US PGA Tour event in seven months, signed for a 71 to finish eight shots off the pace in a tie for 15th, with World Number One Martin Kaymer of Germany firing a 69 to finish a further shot back in joint 20th.
