American duo Webb Simpson and Ryan Armour moved into a tie for the lead at the Wyndham Championship on Friday.
Simpson and Armour posted consecutive rounds in the 60s to move a shot clear after day two in Greensboro, North Carolina.
A day after Matt Every's 61, the overnight leader slipped down the leaderboard as Simpson and Armour took control at 13 under through 36 holes.
Simpson - a North Carolina native and 2012 U.S. Open champion - carded a six-under-par 64.
Simpson had eight birdies and a pair of bogeys at Sedgefield Country Club.
Armour, however, was the star of the show with his flawless nine-under-par 61.
Having watched Every almost break the course record, Armour went close too thanks to nine birdies at the PGA Tour tournament.
Swede Henrik Stenson remains a shot off the pace heading into the third round following his 66.
Vaughn Taylor (66) and Ollie Schniederjans (63) are 11 under, a stroke ahead of Hunter Mahan (65), Kevin Na (63) and Davis Love III (66).
Every is six shots behind Simpson and Armour at the halfway stage after he shot a two-over 72.