The 20-year-old eagled the 18th at the 3M Open in Twin Cities in the United States, rolling in a 26-foot putt from the fringe for a one-shot win over Bryson DeChambeau and Collin Morikawa.

It means he can play on the PGA Tour until 2021, and has entry to next year's Masters and US PGA Championship.

"It's a really special feeling," said Wolff, who finished on 21-under-par.

"I just proved to myself I can be out here."

Wolff was playing in only his fourth PGA Tour event and only his third as a professional.

Of his eagle on the last, he said: "I was shaking, to be honest. A lot of my putts weren't going in today, and I was just kind of telling myself one's bound to drop in.

"It happened at the right time. I just gave it a chance and it went over the right spot that I pointed out. And as soon as it dropped, the tears started coming."

He became the youngest winner on the PGA Tour since Jordan Spieth in 2013.

Wolff is also only the third player after Tiger Woods and Ben Crenshaw to win an NCAA individual championship and a PGA Tour title in the same year.

"I've changed forever, I guess," he added.