In his first PGA Tour event since back surgery, Kevin Chappell scored only the 11th sub-60 round in tour history on Friday (Saturday AEST).
Chappell shot an 11-under 59 in the second round of A Military Tribute at The Greenbrier and had he not missed a 10-foot birdie putt on the par-four ninth, he would have equalled Jim Furyk's tour record.
"I was trying to keep the mindset, keep the foot on the gas and attack," Chappell said.
"All in all, couldn't be happier with where I'm at."
A day after shooting a 71, Chappell opened with a par on No.10, then birdied the next eight to make the turn in 28.
He birdied No.1 to tie the PGA Tour record for consecutive birdies set by Mark Calcavecchia in the 2009 Canadian Open, and got to 11-under with birdies on No.5 and No.7.
Furyk set the record in 2016 with a 58 in the final round of the Travelers Championship.
Chappell was 10-under for the tournament, three shots behind leaders Scottie Scheffler, Joaquin Niemann of Chile and Robby Shelton.
Cameron Smith led the Australian contingent, sitting just four shots off the lead at nine-under after shooting an impressive 64.
Cameron Percy and Matt Jones are both at six-under, while Rhein Gibson beat the cut by one shot by finishing the second round at four-under. Rod Pampling, Steve Allan, John Senden and Cameron Davis were not so fortunate, and missed the cut.
Marc Leishman also withdrew with a back injury after shooting 76 in Thursday's (Friday AEST) first round - the 35-year-old has four bulging disks that occasionally flare up.
However Leishman would have been inspired by the headline-maker of the second round in back surgery comeback kid Chappell.
"Ten months ago I was on the couch and couldn't walk," Chappell said.
"So many people had a lot to do with getting me back out here and getting me competitive. I haven't accomplished a goal yet. While I can win the golf tournament, this is the step in the right direction."
It was the first sub-60 round on the PGA Tour since Brandt Snedeker's 59 at the 2018 Wyndham Championship.
Stuart Appleby shot 59 at The Greenbrier in the final round to win by one stroke in its inaugural season in 2010.