South Korea's KJ Choi and American DJ Trahan enjoyed flawless afternoons to grab a share of the third round lead at the Greensboro Classic in North Carolina.
The leading pair will carry a one-stroke lead over Japan's Shigeki Maruyama and American Jason Bohn into today's final round at the Forest Oaks Country Club.
Seeking a first title, Trahan got off to the best possible start with a birdie at the first and then had 11 consecutive pars before storming to the finish with three birdies and an eagle on the par-four 16th over his closing six holes for a six-under 66.
"I felt like I was just plodding along all day," Trahan said. "I played really solid golf all day.
"Birdied the first hole right out the gate with a 25-footer.
"I started thinking, okay, that's great, let's get going.
"Kind of just hit a wall there, just made a ton of pars. Finally I broke through there on 13, the par-five. Then it just got interesting after that."
Twice a winner on the PGA Tour, Choi also turned in a steady performance with two birdies on his outward nine and three more after the turn for a five-under 67 to join Trahan on 16-under 200.
Bohn, who won his first title at the B.C. Open in July, began in style by eagling the par-five second and roaring into the turn with four consecutive birdies from the sixth.
The 32-year-old American could not maintain the scorching pace, however, mixing two birdies with a bogey on his back to return a seven-under 65 for a three-day total of 15-under 201.
"Today I played great," Bohn said. "I got off to a fantastic start. I just hit some really high quality golf shots, then I kind of got a little loose coming down the stretch.
"To be honest, I made a couple mental mistakes.
"All in all, I'm very pleased with my performance. I'm not afraid to fire at some flags because my short game's pretty sharp right now."
Champion here two years ago, Maruyama had a pair of eagles at the par-five ninth and 13th on his scorecard, mixing them with four birdies and a pair of bogeys to join Bohn at 201.
Lurking two shots back of the co-leaders is Briton Justin Rose who had another consistent afternoon, signing for a four-under 68 to sit alone on 202, one shot clear of American Tim Herron (67).
"I think, obviously, it's a good position to be in," Rose said.
"There's quite a few guys tucked behind the leader. You know somebody's going to go low.
"It's a matter of going out there and being aggressive from the word 'go'.
"When you're two back, there's no time to hang around. No time to be nervous, none of that stuff. Fire from the word 'go'."
Robert Gamez, who captured the Texas Open last week to end a 15-year title drought, maintained his bid for back-to-back wins with a sparkling 63 to lead a group at 12-under.
Gamez's round included five birdies on his outward nine and four in a row from the 13th before he finished a stroke outside the course record.
World number six Sergio Garcia of Spain, the highest ranked player in the tournament, had a six-under 66 to join Gamez with another American Brandt Jobe.
