Kevin Stadler took advantage as Bubba Watson stumbled to claim his first PGA Tour title at the Waste Management Phoenix Open.
Watson was in charge for much of the tournament but could only muster a level-par 71 on Sunday to finish 15 under overall in Arizona.
He was set for a two-man play-off but bogeyed the 18th to hand the title to Stadler on 16 under.
In claiming his first PGA Tour title Stadler emulated his father Craig, who had 13 wins on tour, including the 1982 Masters.
Winning in Phoenix earned Kevin the right to play in Augusta this year.
Stadler said: “It wasn’t pretty. I was walking all over the shop. I hit a lot of good shots and a lot of kind of ugly shots but, thankfully, it all worked out. It feels fantastic. Obviously, I would have liked to make that (birdie) putt on 18 and win that way but it’s been a long time coming, so I’ll take it any way I can get it.”
The title looked a long way off when he hit a double bogey at the par-4 11th.
By that time, though, he already had four birdies to his name and he added another at the 17th for a round of 68, which proved to be enough.
Watson finished in a tie for second with Canada’s Graham DeLaet, who carded a 65.
Hunter Mahan and Hideki Matsuyama were tied for fourth on 14 under.
Scot Martin Laird finished on seven under to be the leading European, while 2013 champion Phil Mickelson finished at three under.