Billy Hurley III carded his second straight 68 on Saturday to remain two clear of the field after 54 holes of the United Leasing Championship.
Hurley ended three rounds at 11-under-par 205. He has no top-10 finishes this season and is searching for his first tour victory.
Joe Affrunti also shot 68 to end two back at minus-9. He bogeyed the final two holes to cost himself a share of the lead.
Adam Hadwin had six birdies in the first 12 holes to take the lead, but he stumbled to a double-bogey at the 14th. Hadwin birdied the last for a 5-under 67. He ended three rounds at 8-under-par 208.
Alex Cejka (69) is alone in fourth at minus-7, while Ben Martin (69) and Kevin Tway (71) are one shot back at 6-under 210 at Victoria National Golf Club.
Hurley birdied the second to remain two clear of Affrunti. Hurley ran off seven straight pars from the third to let Hadwin and Affrunti back into it.
"I battled that internally a little bit because I didn't feel I was playing poorly," said Hurley of falling behind Affrunti. "I knew I was playing well and I knew I was hitting a lot of good shots so I knew it would come and it did."
Hadwin, who teed off six groups ahead of Hurley and Affrunti, got going with birdies at two and four. He flew into a share of the lead at minus-8 with three consecutive birdies from the eighth.
Affrunti moved to 8-under with birdies at two, six and seven.
Hadwin briefly took the lead with a birdie at the 12th, but he faltered to a double bogey at the 14th. Affrunti birdied three in a row from the ninth to be the first to get to minus-11.
"Five in six holes? I had no clue. When you're out there playing it's about trying to make some more birdies," said Affrunti of his run of five birdies in a 6-hole span from the sixth. "You're swinging it good and there's no reason to pull off. You just go after it and see how many you can make."
Hurley joined him at minus-11 with three consecutive birdies from the 10th.
There was a 2-shot swing at the par-4 14th. Hurley rolled in a birdie try to move to 12-under, while Affrunti stumbled to a bogey to dip to minus-10. Affrunti bounced back with a birdie on No. 15 to get within one.
Hurley dipped into a share of the lead as he bogeyed the par-3 16th. He parred the last two to end at 11-under.
Affrunti stumbled to bogeys on the final two holes to finish two back. Hadwin got one stroke back with a birdie at the last. That gave him the low round of the day with his 67.
NOTES: Hurley owns the 54-hole lead for the first time on the Web.com Tour ... Of the top six players on the leaderboard, none have won on tour ... Defending champion Peter Tomasulo dropped four strokes in the last two holes, but still shot 2-under 70, which helped him climb 19 spots into a share of 24th at 2- under-par 214.