Rickie Fowler regrouped after surrendering a five-shot lead on the back nine to win the Waste Management Phoenix Open by two strokes.
Fowler triple-bogeyed the par-four 11th hole and found himself a shot behind Branden Grace with five holes left at TPC Scottsdale in Arizona.
But with another sickening defeat staring him in the face in a long list of final-round fadeouts, the American regained his poise and made two birdies down the stretch on a wet afternoon.
He carded 74 to finish at 17-under-par 267 as South African Grace shot 69 for second place on 15-under after bogeying the 17th where his drive found water.
Fowler, who had also double-bogeyed the fifth hole, told Sky Sports: "It was a bit of a rollercoaster, but other than two holes I felt like it was a decent round of golf considering the conditions.
"I did a decent job of getting past the two holes which cost us five shots today. A bad break with the ball rolling back into the water but we moved on and that's what's nice about having a cushion after 54 holes, it allows you to make mistakes. You don't have to be perfect.
"So to step up and play the way I did the last four or five holes was nice.
"I have been in this position a lot and know it can go the right way or the wrong way. At the end of the day winning is amazing, but there are a lot bigger things in life. If I hadn't won today the sun is still going to rise tomorrow. That was a calming factor."