Rookie Brice Garnett held a one-shot lead at the halfway stage of the Crown Plaza Invitational in Forth Worth, Texas.
The American hit three birdies and an eagle to finish on four-under for the day, with just one bogey blighting his second-round scorecard.
It adds to a string of solid performances in Texas by Garnett after he achieved his first top-10 finish on the PGA Tour, a tie for seventh, six weeks ago at the Shell Houston Open.
"For some reason, it's just I've kind of adapted to Texas golf," he told the PGA Tour website. "Growing up back home in the spring and fall, it gets pretty windy as well. I kind of relish whenever the wind blows and (you have) kind of got to control your ball."
The result puts the 29-year-old on seven-under overall, with Chris Stroud and Robert Streb in hot pursuit one shot behind.
Stroud notched eight birdies as he clawed back some ground after a disappointing opening day, making five putts from beyond 20 feet with four of them coming on his final nine holes.
Reflecting on his putting prowess after frustrations earlier this season, he said: "Man, it sure is nice to make putts. I was so relaxed out there. It was obviously a little luck.
"But the key is every putt I hit today, I hit really, really solid. I never really hit a bad putt."
A pack of seven ended the day still well in contention on five-under par.
They were spearheaded by South African Tim Clark, who notched four back-to-back birdies from the 12th to 15th holes, first round leader Dustin Johnson and include Englishman Brian Davis who had success on the front nine, hitting three birdies.
Johnson, who finished on five-under to take the lead after the opening day, followed that up with an even-par 70 to join the cluster on five-under for the tournament.
The American, playing in the event for the first time in six years, felt his putting betrayed him on the day.
"Just didn't hole the putts," he said. "Got a couple of bad kicks. Other than that, I played pretty solid again today."