South Korea's Kim Si-woo outplayed Luke Donald by five strokes to win the Wyndham Championship and with it his first PGA Tour title.
The 21-year-old took the lead with a second-round 60 at the Sedgefield Country Club and could not be dislodged over the weekend, even though England's Donald rallied to card a three-under 67 on the final day.
World number 115 Kim - perhaps feeling the pressure - looked wobbly over the back nine on Sunday, signing for three bogeys before pulling back a shot on the 15th, and he was then forced to wait to complete his last two holes due to inclement weather in Greensboro, Ohio.
He returned to the course to make par before adding gloss to his maiden victory with a birdie on the last.
Graeme McDowell finished tied for fifth place after a round of two under par (above) left him on 14 under for the tournament.
Shane Lowry, who had harboured Ryder Cup selection hopes ahead of the tournament, shot a 67 to finish on eight under.
