Webb Simpson shot a 6-under 64 on Saturday to move to 15-under 195 and take a two-stroke lead after three rounds at the Wyndham Championship.
The Raleigh native and former Wake Forest player had four birdies and an eagle during his late charge at the final event before the PGA Tour's playoffs start next week.
Tommy Gainey (69), who led or shared the lead after each of the first two rounds, was 13 under.
Carl Pettersson (63) and John Mallinger (65) were 12 under. Daniel Summerhays (68) was 11 under, and Billy Horschel (66), Charles Howell III (66), Jason Bohn (67), Retief Goosen (68) and Ernie Els (69) were another stroke back.
Play was halted for 1 hour, 4 minutes late in the day due to severe weather.