Robert Streb shot a 3-under 67 on Saturday and holds a three-stroke lead after three rounds of the RSM Classic at Sea Island, Ga.
Streb is sitting at 17-under 195 at Sea Island Resort, and his three-stroke lead matches the record for the largest 54-hole lead in the event's history.
Zach Johnson and Bronson Burgoon are at 14-under 198. Johnson shot a 5-under 65 and Burgoon carded a 67.
Argentina's Emiliano Grillo also shot 65 -- tying Johnson and Andrew Landry for the low round of the day -- and is four shots off the lead.
Streb, 33, is making a charge at his second career victory. His other win also came at Sea Island Resort in 2014 when the event was known as The McGladrey Classic.
Streb had three birdies in Saturday's bogey-free round. He hit 12 of 14 fairways and 15 of 18 greens and is aiming to keep the momentum going during Sunday's final round.
"Just trying to keep doing what I'm doing," Streb said after the round. "I don't think the wind's supposed to blow quite as hard tomorrow, so probably got to make a few birdies. Guessing a few guys will go low and see how we do."
Johnson finished his round in style by sinking a 32-foot birdie putt on 18. He also knocked down a 45-foot birdie putt on the opening hole.
Needless to say, Johnson was highly pleased with his putting during the round.
"For the most part the whole week has been pretty solid with the flat stick," Johnson said. "You know, it's nice getting off to a good start, that certainly helps. It gets obviously the confidence, maybe even the freedom and momentum that can come off of that. Felt like I birdied a lot of holes today that you're not supposed to birdie."
Johnson birdied three of the final five holes and had six overall for the round. He had one bogey.
Burgoon had five birdies during a six-hole stretch of the back nine with the other hole (14) resulting in a bogey. He had one birdie and two bogeys on the front nine.
The round kept Burgoon, 33, in the hunt for his first PGA Tour victory.
"I like where I'm at obviously in the tournament, but I just want to get better, that's my No. 1 goal," Burgoon said. "Winning a golf tournament would be icing on the cake, but I've just got to get better."
Grillo made a late charge with an eagle on the par-5, No. 15 and birdies on 17 and 18. Overall, he had six birdies and three bogeys.
"It puts me back in the fight for tomorrow," Grillo said of his finishing run. "I was able to make a great putt on 15 and then a phenomenal putt on 17, and then on 18 I was able to match the speed with the line. I was kind of hoping for a solid finish and I got it."
Kevin Kisner (who shot 66), Kyle Stanley (68) and Colombia's Camilo Villegas (70) are tied for fifth at 12-under 200.
Landry, Matthew NeSmith (66) and Patton Kizzire (70) are another shot back in a tie for eighth.
Australia's Jason Day shot 67 and is tied for 14th at 9-under 203. Webb Simpson (68) is out of the mix and tied for 41st at 5-under 207.
--Field Level Media