Angel Cabrera recorded his first ever non-major victory on the PGA Tour at the Greenbrier Classic, a second successive 64 earning him the title in West Virginia.
The Argentine finished on 16 under par to finally end a long barren run that stretches back to his 2009 Masters success, with his only other triumph on American soil coming at the 2007 US Open at Oakmont.
After a superb six-under score on Saturday had pushed him up into second place, Cabrera quickly found himself out in front as overnight leader Billy Hurley dropped back with a plethora of bogeys.
Cabrera managed three birdies on his front nine and then moved past the clubhouse lead set by George McNeill with back-to-back birdies from the 11th hole onwards.
It then seemed the 44-year-old had wrapped up the tournament when he chipped in with his approach with an eight iron at the 13th, giving him some breathing space at 16 under with five holes to play.
In the end he needed the gap as successive bogeys cut his advantage to one by the time he stood on the 16th tee.
However, he showed great composure to end the slide with a par, then drove onto the green in two at the par-five 17th to set up an easy birdie.
With his two-shot cushion restored Cabrera was able to relax at the last, his birdie putt just missing as he had to make do with a par to finish.
It did not matter in the final outcome, as he secured another green jacket to add to his wardrobe, along with the one he took home from Augusta more than five years ago.
"I'm very happy to have won," Cabrera said. "I've been working really hard, and I needed this.
"I hit it very solid today, and was under control. The work I've been doing the last few weeks paid off."
McNeil had stormed up the leaderboard thanks to a stunning 61 that included a hole-in-one at the eighth, as well as seven birdies.
His consolation prize for coming second is a qualifying place for the Open Championship - though it remains to be seen if he will make the trip to Royal Liverpool, having already pulled out of next week's John Deere Classic due to a family illness.
"I have things going on elsewhere," McNeill said. "You go out and golf doesn't really mean a whole lot. It is hard. I played good today and got finished. Golf doesn't mean a whole lot sometimes."
Webb Simpson ended up alone in third place on 10 under after a blemish-free 63, leaving him one ahead of a seven-man group that included Hurley who rounded out his week with a rather disappointing 73.
The American was joined seven shots back of the winner by compatriots Bud Cauley, Keegan Bradley, Brendon Todd, Chris Stroud, Cameron Tringale and Will Wilcox.