Jason Day leads the Wells Fargo Championship at Quail Hollow by two shots ahead of Sunday's final day after a third round four-under-par 67.
The 30-year-old Australian, who is seeking his 12th PGA Tour victory, started Saturday one shot behind halfway leader Peter Malnati.
Day endured a frustrating start with a bogey at the fifth and seven pars in the opening eight holes of his round.
If I can hit a lot more greens and get the proximity closer, I feel like I could, not run away from it, but do pretty well if I can make the putts.Jason Day
But the former world number one surged to the top of the leaderboard with five birdies in seven from the ninth to sit two shots ahead of American Nick Watney on a total of 10-under 203.
"Today was a bit of a struggle through eight holes. Didn't quite get the ball in position," Day said. "Got a tap-in birdie on nine and a good shot down the middle on 10. I knew good things would come. I just had to be patient.
"If I can hit a lot more greens and get the proximity closer, I feel like I could, not run away from it, but do pretty well if I can make the putts."
Watney recovered from a double-bogey seven at the 10th to fire four birdies over the final six holes to sit in contention behind Day.
Peter Uihlein hit the round of the day with a nine-under 62 as he missed out on equalling Rory McIlroy's course record from 2015 by just one shot.
He sits a further shot back and shares third with fellow Americans Bryson DeChambeau and Aaron Wise and England's Paul Casey.
McIlroy bounced back from his dismal 76 on Friday with a five-under 66 which took him to three under and into a tie for 16th place, while Tiger Woods had three birdies in each nine but dropped three shots in a round of 68 and sits on one under.
Day is 1/250 to win the title, while Watney is available at 125/1 and McIlroy is priced at 1000/1.
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