"It wasn't the greatest start, but got out of there with a bunch of pars and tried to find some consistency and it got better", said Streb, whose only PGA Tour victory came in the 2014 RSM when it was known as the McGladrey Classic.
Streb fired a 63 on the par-72 Plantation Course, one of two in use in the first two rounds of the RSM Classic.
Four-time PGA Tour victor Villegas took a break from competitive action after his daughter Mia, who had been battling brain and spine tumors, died in July.
Burgoon had five birdies in a six-hole stretch on the back nine - the exception was a bogey on the 14th, playing straight into a strong wind along the water - to overcome a rough start and get into the final group. Winless since the 2015 British Open at St. Andrews, Johnson rallied late with three birdies over his last five holes, finishing with a 30-foot birdie putt.
It was a quieter day for the Irish as McDowell made two birdies in a two-under 68 on the Seaside Course but fell back to 38th in the clubhouse on four-under alongside Lowry, who closed with a birdie four on the Plantation Course for a one-under 71. "And it was cool", said Villegas.
"I pushed my drive, it bounced on the cart path".
"It was playing like 115 front, 127 hole, and there was a little bit of downwind", McDonald said.
He said he enjoyed the weather that was "a little bit more Colombian" on Friday.
Emiliano Grillo of Argentina sank a 25-foot eagle putt on the 15th hole and birdied the last two holes for a 65 and is four shots back in solo fourth.
"She made a hole-in-one, we nearly one-shot lead", Kim said. Even so, he is building confidence mainly from his shoulder feeling good and knowing he has put in the work.
"It s not a two-day thing, it s a process. I'm guessing a few guys will go low and see how we do".
"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.