Brown did his damage on the back nine at Trump International, making four birdies for 5-under 67.
They set the tournament record for 54 holes at 18-under 198 and were four clear of anyone else. Both are going for their first PGA Tour win, which would earn them a spot in the PGA Championship later this summer.
And both are playing in the final group for the first time on tour.
“It’s a position I’ve never been in before,” Brown said. “But I’m playing good. So I look forward to good things.”
WEB.COM TOUR: In Santiago, Chile, Aiken native Kevin Kisner shot a blistering 11-under-par 61, breaking the Prince of Wales Country Club course record by three strokes, to share the lead with Benjamin Alvarado at 17-under 199 after three rounds of the Chile Clasic.
“I made a lot of 10 and 15-footers, which you do anytime you shoot low,” Kisner said.
“It seems like as soon as you look up you think ‘dang, that’s going in too.’ You start making some putts and get in the rhythm of the round and a couple of good things happen.”
Alvarado had 66 on Saturday.