Harrison Frazar won his maiden PGA Tour title at the St Jude Classic after beating Robert Karlsson in a dramatic play-off in Memphis.
Swede Karlsson misjudged a chip to the green on the 12th, the third hole in the play-off, to card a bogey five.
But American Frazar, who had been close to losing his Tour card, kept his composure to make par and qualify for next week's US Open in Maryland.
England's world number two Lee Westwood finished six under, seven off the lead.
The defending champion produced his best round of the week, a four-under 66, to finish in a tie for 11th.
Frazar, who turns 40 next month, won for the first time in 355 attempts having looked as though he had spurned his chance when he bogeyed the final hole.
The American found the water with his approach and finished level with overnight leader Karlsson on 13 under after carding a three-under-par 67 to the Swede's 68.
That gave Karlsson a second chance but like last year, when he lost out to Westwood in a play-off, the 41-year-old failed to take it.
"I never thought it would happen," said Frazar, who also ensured his first-ever appearance at Augusta for the Masters next year.
"The last few years have been really tough. I thank my family and friends who have always believed in me."
Frazar battled back from season-ending hip surgery last August and missed five successive cuts this year before regaining his form.
"It just shows you how sometimes when you let your guard down or you let your expectations soften, you can free yourself up," said Frazar, who had considered quitting the tour.
"It was a great match, and someone has got to win and someone has got to lose," said Karlsson. "This time it was me. I'm very, very proud of the way I played and handled myself."
Camilio Villegas shot a final-round 64 to finish in a tie for third place with four other players.
Retief Goosen, Charles Howell III, Ryuji Imada and Tim Herron were the others tied with the Colombian on eight under.