Kevin Chappell shot an 11-under-par 59 to record the 11th sub-60 round in PGA Tour history during Friday's second round of A Military Tribute at The Greenbrier in White Sulphur Springs, W.Va.
Chappell's record-setting performance has him at 10-under 130 for the tournament, good enough for fifth place at The Old White TPC. He resides three strokes behind the trio of Scottie Scheffler, Robby Shelton and Chile's Joaquin Niemann.
The 33-year-old Chappell, who opened with a 1-over 71 on Thursday, began with a par on No. 10 before making nine consecutive birdies to match the PGA Tour record set by Mark Calcavecchia in 2009.
Chappell is the second player to shoot 59 on The Old White TPC, joining Stuart Appleby, who managed the feat in the final round at the 2010 tournament.
It was a surprising accomplishment considering Chappell was playing in his first PGA Tour event since the Mayakoba Golf Classic in November. He later underwent microdiscectomy surgery on his back.
"Ten months ago I was on the couch and couldn't walk," Chappell told the Golf Channel. "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."
Shelton, who is making his debut as a full PGA Tour member, followed up his first-round 62 by shooting 4 under par on the back nine Friday before finishing with a 65.
Scheffler, who began his day with four consecutive birdies, joined Niemann and Adam Long in carding a 62 on Friday. Long resides in fourth place at 12 under.
Denny McCarthy shot a 61 on Friday to move into a tie for 15th place at 7 under.
Defending champion Kevin Na played in morning wave and finished 6 under after a second-round 70. He resides in a tie for 25th place.