Angel Cabrera claimed his first PGA Tour win outside of the major championships with a final-round 64 at the Greenbrier Classic.
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The Argentinian, who won the 2007 US Open and 2009 Masters, finished 16 under par at White Sulphur Springs to hold off the emotional charge of George McNeill, whose 61 included a hole in one at the eighth.
McNeill's consolation 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.
His ace was one of two on the day, emulated by Bud Cauley at the 18th.
Cabrera produced the next best thing by holing his 175-yard approach for an eagle two at the 13th and - despite a pair of bogeys after that - he held his nerve to complete a two-stroke victory.
He told Sky Sports 4 afterwards: "I needed this, I've been working really hard and I'm really happy I won.
"I hit it very solidly, I was under control and the work we've been doing paid off."
McNeill is joined by Chris Stroud, Cameron Tringale and overnight leader Billy Hurley III in qualifying for the Open, with four places available to the top finishers not already exempt.
The latter trio actually shared fourth place on nine under par with Cauley and Will Wilcox, but got the nod due to their superior world rankings.
A post on the official Open Championship Twitter feed shortly after the end of the round read: "Congratulations to George McNeill, @ChrisStroudPGA , @CamTringalePGA, and @BillyHurley3 on qualifying for #TheOpen. See you at @RLGCHoylake!"
A long putt for birdie at the third set the wheels in motion for Cabrera, who picked up further shots with pin-high approaches at the fifth and seventh seeing him out in 31.
He knocked in a good 20-foot putt at the 11th, calmly holed out for birdie at the next and punched the air as his perfect iron into the next checked left and rolled into the hole.
With a three-shot lead, it seemed the tournament was wrapped up - but he misjudged his chips at the next two holes and was unable to save par on either occasion.
Par at 16 and birdie at the long 17th steadied the ship and victory was completed with a tap-in after an excellent first putt along the side of the huge ridge running across the final green.
McNeill produced a spectacular front nine of 28, with his 219-yard hole in one following four straight birdies for a run of three-three-three-three-one from the fourth.
Three more birdies followed on the back nine as McNeill kept himself together amid emotional turmoil, with his older sister Michelle seriously ill.
"Sometimes golf doesn't mean a whole lot," he said in a tearful post-round interview. "It's hard.
"I played good today, it was a good middle part of the round but like I said, golf doesn't mean all that much."
His 61 equalled the best round of the week, matching Troy Matteson's effort on day two.
Webb Simpson, the 2012 US Open champion, finished third on his own at 10 under par after a bogey-free, seven-under-par 63.
Cauley's ace meant he picked up four shots in the last four holes for a 64, but as others came in at nine under he was edged out of the Open.
One-under-par 69s were enough for Stroud and Tringale, while Hurley clung on despite finishing with a disappointing 73. The former Navy lieutenant had led after 36 and 54 holes.