(CNN) -- Kenny Perry fired a closing round of six-under 66 to win the Buick Open by one stroke at Warwick Hills.
It was Perry's second title of the season following success in the Memorial tournament.
Woody Austin and Bubba Watson both remained in contention after Perry had finished on 19-under 269, but saw their hopes evaporate.
Watson missed a 12-foot birdie putt on the final green which would have earned him a playoff, but Austin's fadeout was more disappointing.
"I threw it away. I didn't hit the ball close enough to the hole the last two holes to counteract my yips that I have when it comes to putting," Austin said.
Austin, the winner in 1995, had three straight birdies starting on No. 12 and then got to 20 under with a birdie at the 16th.
He was still one stroke ahead with two holes to play but finished bogey-bogey and tied for second with Watson at 18 under.
Perry was surprised to find that he had emerged as the winner.
"I still can't believe I won. I feel like I need to go make a birdie out there to go win this tournament," he said.
It was a second title of the season for the 47-year-old. "I had multiple wins in '03, '05 and '08. My forties have been pretty good for me," Perry added.
He also won the Memorial this year and is in contention for a place on the U.S. Ryder Cup team, which will take on Europe in September at Valhalla in his home state of Kentucky.
"I've been hitting great bunker shots this week and I was very comfortable with the sand."