Sweden's Peter Hanson held off a late charge from World Number 1 Rory McIlroy to win the BMW Masters at the Lake Malaren Golf Club in Shanghai by a single stroke.
Hanson began the final round one clear of McIlroy and the Swede looked to have sealed the deal, four strokes clear with four to play.
But the young Northern Irishman wasn't finished. He made a fantastic eagle at the 15th then birdied the following hole to reduce the deficit to just two shots. When Hanson found sand from the tee at the short 17th, it looked as though there might be just one in it going down the last.
But the 35-year-old Ryder Cup star dug deep and saved par from the bunker, keeping his two shot cushion. He was to need it.
"It was a little bit tense," said Hanson. "Rory made a tremendous effort with his eagle on 15 and birdie on 16, so it put quite a bit of pressure on me. I was trying to play it a little bit safe but against the World Number One you still have to hit the shots. This is by far my biggest win in my career."
Two more of the European Ryder Cup heroes from Medinah, Luke Donald and Ian Poulter finished third and fourth respectively with Ireland's Shane Lowry in fifth.
Paul Casey continued his resurgence, closing with three straight 68s to end the week in a tie for sixth.