Charlie Beljan, a struggling rookie who played on a mini-tour last year, fired the best round of the day, an 8-under 62. That came after a first-round 70, and propelled him into an unfamiliar stratosphere, one stroke off the lead.
"Today was the best day of my career," he said. "It was wonderful from the first hole, making birdie, to the last hole I made bogey, but it still didn't matter.
"I shot 62, which was my career-low round out here. And then to do it on the PGA Tour - each time I tee it up out here is a treat, and then to do something like I did today is really something special.
"So I'm only halfway there. I look forward to the weekend. I'm sure it will be a zoo and I'm looking forward to it."
Jonathan Byrd, Jeff Maggert, Jerry Kelly and Martin Flores are also at 8 under, though Flores has two holes remaining in the second round. He and 11 other golfers were still on the course when the horn blew to stop play at 8:45 p.m. due to darkness.
Those golfers included West Virginia Amateur representative Jess Ferrell, who was a respectable 3 over par for the day after a first-round 80.
They will return at 8:30 a.m. today to finish their rounds. The third round will follow, with threesomes going off of split tees in an attempt to end by 6 p.m., within the CBS television window.
J.B. Holmes and Charlie Wi are two strokes behind the leader at 133, with Bob Estes and five others at 134. 2010 Classic runner-up Jeff Overton led a nine-man group at 135. Steve Stricker, who birdied holes No. 13-17 to make his 300th cut, leads the 136 grouping.
Those at 137 include first-round leader Vijay Singh, who followed his opening-round 63 with a 4-over-par 74.
The cut will not move from 1-under 139, as 77 players finished at that score or better. Greenbrier pro emeritus Tom Watson is among those making the cut, finishing at 2-under 138. He had four birdies on the front nine to put him in good position when the thunder rumbled.
After the storm, he finished a back nine that contained eight pars.
"It actually helped me," Watson said. "Gave me a chance to get my legs back a little bit, relax a little bit. Plus I had a chance to eat good Greenbrier food out here. They spoil you here."
Reach Doug Smock at 304-348-5130, dougsm...@wvgazette.com or follow him at twitter.com/dougsmock.