Snedeker rolled in a 20-foot birdie putt at his final hole, the par-4 ninth, to join one of golf's most exclusive clubs.
There was little hint early in Snedeker's round that something special was in the offing in flawless morning conditions, with little wind and soft greens offering a low score to anyone on their game at Sedgefield Country Club. He then strung together two different birdie streaks, one of four in a row on the front nine and then three more in a row to start the back.
Meanwhile, Players Champion Webb Simpson enters as the bookies favourites thanks to a successful history in Greensboro, but there are plenty of others flying under the radar this week who we think have a good shot at gaining their first PGA Tour victories (Niemnann, Schniederjans and Varner III).
This is the third consecutive year that the PGA Tour has had a sub-60 round. "As much as I tried to positive self-talk myself into playing good, I didn't see 59 coming today, to be honest with you".
"It wears on you and you've got to be really strong to overcome that and just know that it's going to happen, you just don't know when, where, or how", Snedeker said.
But at the par-4 eighth, Snedeker missed a six-foot birdie putt and tapped in for par.
The best part was that he didn't realize it went in until he got to the green.More news: Bud Light "Victory Fridges" To Unlock In Cleveland When Browns Finally Win
"Golf doesn't owe us anything", Snedeker said.
Also in the field and needing hot finishes at the Wyndham Championship are Australians Matt Jones, who is 146th on the FedEx standings, as well as Cameron Percy (170th), Stuart Appleby (196th).
It was the US PGA's first 59 since Canada's Adam Hadwin at last year's Careerbuilder Challenge.
Only five players have gone on to win the tournament in which they shot 59, and Snedeker knew he had work to remain on top come Sunday.
"The hardest thing to do in golf is follow up a great round", Snedeker said. "I knocked that putt in".
Thomas chipped in for eagle at the 10th but bogeyed the next, before racking up eight birdies over his next 10 holes. "I kind of took that mindset of, well, better get out there and make some birdies if you don't want to be 10, 11 shots behind by the end of this day".