Jim Furyk made history in the final round of the Travelers Championship as he fired the first 58 on the PGA Tour, but it wasn't enough to deny Russell Knox victory on a day when Pádraig Harrington hit a disappointing 75.
The American had already signed his historic card by the time winner Russell Knox went out in the final group and - after starting the day at one over - he finished three shots behind the Scotsman, who finished a shot clear of Jerry Kelly after a 68 that got him to 14 under.
Furyk was 12 under for his final round alone after an eagle and 10 birdies, and he also became the first player in Tour history to record two sub-60 rounds after his 59 at the BMW Masters in 2013.
Harrington meanwhile paid the price for a poor back nine to record a 75 that saw the Olympian finish on -1 and a tie for 64th position.
Two birdies and a bogey saw the Irishman score 34 on the front nine, but a wayward tee shot on the 462-yard 10th was a sign of things to come.
That bogey was followed by further dropped shots at 12, 13, 14 and 16 while the 17th was certainly one to forget.
The 44-year-old found the water and three-putted for a double bogey, before finishing the weekend with a birdie after a brilliant 124-yard approach shot that left Harrington with a three-foot putt.
Afterwards Furyk couldn't hide his joy at his moment of history.
"It's pretty cool," Furyk told Sky Sports 4. "Winning a major championship is at the top of my list, playing and winning on Ryder Cup teams and Presidents Cup teams and winning golf tournaments. This is really special.
"A million and a half rounds played in the history of the PGA Tour and you look at the great names ahead of me. It's humbling, to stand alone at 58 is really a cool accomplishment.
Over a million golf rounds.
— PGA TOUR (@PGATOUR) August 7, 2016
One 58. https://t.co/uLlBOUS50l
"I never thought I'd have the opportunity to shoot 59 so once we accomplished that goal I said, 'I had my one chance, I was able to go ahead and birdie the last hole and do it, it'll probably never happen again', and lo and behold, I made the turn today and said, 'Here we go again'.
"It's fun to break that barrier and be the first one. I know I turned at eight under par. I birdied 10, birdied 11, birdied 12 and then it becomes a mental struggle."
Furyk's stunning performance at TPC River Highlands comes just 11 days after Germany's Stephan Jaeger shot a 58 at the Ellie Mae Classic on the Web.com Tour - the PGA's second tier - the first time it had ever been achieved in a sanctioned event on the Web.com Tour, PGA Tour, European Tour or Champions Tour.
After a par on the first, Furyk went birdie-eagle-birdie and then recorded seven birdies in a row after a second par on the fifth. Three pars followed but the 2003 US Open winner rolled in a 24-foot putt on the 16th and parred his way home to seal his place in the history books.
Furyk - who did not make an appearance between September and May due to a wrist injury that required surgery - needed just 24 putts and hit all 18 greens in regulation.
Al Geiberger, Chip Beck, David Duval, Paul Goydos and Stuart Appleby are the other players to have shot sub-60 on the PGA Tour.
For Knox, it was a second triumph of the season after his maiden victory at the WGC - HSBC Champions in November, and will keep him in the thoughts of European Ryder Cup captain Darren Clarke for next month's contest at Hazeltine.
His win in China did not count towards qualification as he was not a European Tour member at the time and, while he is still on the outside looking in, his good form can only increase his wild card chances.
The 31-year-old began the day three shots behind overnight leader Daniel Berger but as the American fell back, Knox kept grinding away, turning in 34 and then opening up a two-shot lead with birdies on the 13th and 14th.
A bogey after narrowly avoiding the water on the 16th cut the gap to one and when Knox found sand with his approach to the last, Kelly - who had fired a 64 - had increased hopes of a play-off.
Knox left himself a testing 12-footer out of the sand but made an excellent clutch putt to get over the line.
"I played nicely but to make a putt like that to win a tournament, that's everybody's dream," he said. "It's the first time I've made a putt like that to win.
"It's been an incredible year for me. I keep believing in myself, I tell myself every day that I'm good enough to be up there and win tournaments. It's been an enjoyable ride."
