Kevin Na edged Patrick Cantlay in a play-off to win the Shriners Hospitals for Children Open on Sunday.
Na won the PGA Tour event for a second time, adding to his 2011 success after a dramatic final round in Las Vegas.
The American, who carded a second-round 62 and a 61 in the third, finished at 23 under, alongside Cantlay, after a final-round 70.
A par at the second play-off hole was enough for Na to secure his fourth PGA Tour victory as Cantlay made bogey.
Na endured a difficult final round, making a triple bogey on the par-four 10th before recovering, including sinking a 22-footer for par at 17.
Cantlay, who fired a final-round 68, saw a 24-footer for the win at the last just miss, as he finished runner-up for the second straight year.
Na and Cantlay sunk putts for birdies at the first play-off hole, the former walking his in, before the second proved the difference.
Pat Perez (68) finished outright third at 21 under, a shot ahead of defending champion Bryson DeChambeau (63), Adam Hadwin (63) and Brian Stuard (67).