Henrik Stenson was third on seven under, with fellow Swede Jonas Blixt six under. Rory McIlroy ended three under after a 70, with Lee Westwood three over after a 76.
The enigmatic Dufner, a two-time PGA Tour winner, came closest to a major title when he squandered a five-shot lead with four to play as he lost to Keegan Bradley in a play-off for the 2011 US PGA title. He played imperious golf at Oak Hill on Sunday, hardly hitting a bad shot, to open his major account in upstate New York.
Dufner, who equalled the lowest score in major history with a 63 on Friday, trailed Furyk by one going into the final round, but was sharing the lead with the eight-time Ryder Cup star after a birdie on the fourth and had a two-shot gap after the ninth. A tentative birdie putt on the 10th, followed by almost missing the next, were virtually the only outward signs of nerves – until both players bogeyed the 17th and 18th – as Dufner maintained his distance on Furyk all the way to the giant Wanamaker trophy. “I can’t believe this is happening to me,” said Dufner, who is the 18th different winner in the last 20 majors. “To come back from a couple of years ago in this championship when I lost to Keegan in the play-off, to win feels really, really good. The last two holes were a little unfortunate. I wish I could’ve closed out with no bogeys but I am happy to get the job done. It’s a big step for my career.”
Furyk who won his sole major at the 2003 US Open and who won the last of his 16 titles in 2010, said: “I needed to keep the pedal down and make pars there and keep the pressure on him and I just didn’t do it.
“If I could go back I would have to try and make par at 17 and 18 and try and put some heat on him.”
The 37-year-old has now gone 18 majors and five years without a major title and will have to wait until the 2014 Masters at Augusta to try to resume his quest for a 15th Grand Slam victory. “I’ve been there in half of them so that’s about right. If you are going to be in there three-quarters or half of them with a chance to win on the back nine, you have just got to get it done,” said Woods. “I was right there and certainly had a chance to win the Masters and the British this year. The other two, I just didn’t hit it good enough. Just the way it goes.”