American Brian Harman holed a long-range putt on the 18th to claim a one-shot victory in the Wells Fargo Championship.
A play-off looked all but certain with Dustin Johnson, Pat Perez and Harman all tied on nine under and the latter lining up a lengthy putt on 18.
But he judged it perfectly, adding a birdie to the one he had managed on 17 to post a four-under-par 68 and a four-round total of 10 under.
That was enough to bring 30-year-old Harman his second PGA Tour victory, adding to the John Deere Classic in 2014.
Patrick Reed led by one shot overnight in North Carolina but eventually finished five shots off the lead in a tie for 12th place after struggling to a 75.
World number one Johnson - in his first tournament back from a back injury - set the clubhouse pace with his round of 67, which also saw him birdie 18.
He was then joined by Perez, who was three under through four holes and recovered from a double bogey at 14 by birdieing two of the final three holes for a 68.
Jon Rahm finished fourth, two shots off the lead, while England's Paul Casey was another to have a strong final round, his 68 helping him into a tie for 12th.