Scott Stallings birdied the final hole to snatch a one-shot win in the Farmers Insurance Open at Torrey Pines.
On a tense final day in California, no less than 10 players enjoyed a share of the lead at various points but it was Stallings who held his nerve to secure himself a third PGA Tour success.
His closing four-under 68 gave him a winning total of nine-under 279 and put him one in front of fellow American Pat Perez, Aussies Marc Leishman and Jason Day, South Korea's KJ Choi and Canada's Graham DeLaet.
Stallings had started the day three shots behind Gary Woodland and remained tucked away in the pack after playing his first seven holes in even par.
Birdies at eight and nine put him just one back before a bogey at 10 dropped him two behind again.
But with none of the leaders able to advance their scores past eight-under, Stallings roared into the lead with three birdies in four holes from the 11th.
Although he dropped a a shot at 16, excellent par saves at 15 and 17 kept him on track and when he birdied the last after his approach just cleared the water in front of the green he'd set the new target of nine-under.
That knocked out Choi (66) and Day (68), who had earlier posted eight-under, but there were still threats to his lead out on the course.
Woodland looked the biggest danger after keeping alive with a string of one-putts following some poor approach play but after hitting nine-under he dropped a shot at 14 and then blew his chances with a double bogey at 17 - a hole where Choi and Day had also registered what proved costly bogeys.
Leishman still had the chance to tie with an eagle at the par five 18th but, after laying up, his bold attempt to hole a wedge from 100 yards just failed and he had to settle for birdie.
Charley Hoffman, who finished in a tie for seventh, produced the shot of the day by scoring a hole-in-one at the par three third.
Drove it poorly
Stallings, who hit just four out of 14 fairways, said: "I drove it very poorly. I hit a really bad one on 17 and managed to make a really good par.
"And at 18 I hit four-iron as hard as I possibly could and just tried to get it over the front and it barely stayed (on the green).
"It was nice to kind of hold up coming down the stretch."
The victory ensures Stallings a return trip to The Masters and he said: "Obviously that's something on everyone's 'to do' list on the PGA Tour and I'm excited to go back in April."