Colombian Camilo Villegas carded a seven-under-par 63 to clinch a one-stroke victory at the Wyndham Championship at Greensboro, North Carolina on Sunday.
Villegas had an eagle and five birdies in a flawless round at Sedgefield Country Club to clinch his fourth victory on the PGA Tour and first since 2010.
The 32-year-old finished at 17-under 263 to edge Swede Freddie Jacobson (66), who bogeyed the last after missing a 10-foot putt, and American Bill Haas (64).
Third round leader Nick Watney led with seven holes to play but closed poorly, running up a double-bogey at the last after slicing his tee shot out of bounds.
The American carded 70 to tie for fifth on 14-under with Brandt Snedeker and Webb Simpson.
The only Irish player in the event, Padraig Harrington, had missed the cut by six shots on Friday to finish his PGA season in 188th place, which saw the Dubliner miss out on the season-ending FedExCup.