Webb Simpson holds the lead ahead of the final round of the Wells Fargo Championship, although Rory McIlroy is now in contention.
Local boy Simpson carded five birdies and two bogeys in his round of 69 to retake the lead at Quail Hollow going into the final day, and he lies one shot clear of DA Points and Ryan Moore.
However, Simpson is far from bullish about his chances going into Sunday's round, particularly after 2010 champion McIlroy fired a superb round of 66 to pull within two.
"I don't want to get ahead of myself," Simpson told www.pgatour.com. "I look at the leaderboard and there's so many great players within a shot or two. So I know it's going to be a tough day.
"This is one of those golf courses where if conditions are right you can get a string of birdies going.
"You saw McIlroy a few years ago shoot 10 under. Knowing that, my expectations aren't too high."
McIlroy needs a top seven finish to usurp Luke Donald at the top of the world rankings and is on course to achieve that after opening his third round with three successive birdies, and seven in his first 11 holes.
The Northern Irishman is in a share of fourth alongside halfway leader Nick Watney at 12-under-par, one ahead of Rickie Fowler and Stewart Cink.