Griffin is world number 176
The American Lanto Griffin won his first PGA Tour title with a one-off victory at the Houston Open.
The 31-year-old world number 176 won a three-under final round of 69 for a total of 14 under.
His victory earned him a place in the US PGA Championship, Masters and Players Championship.
Compatriots Scott Harrington and Mark Hubbard, both also without a PGA title, shared as second, Hubbard made an 80-foot eagle pit during his round of 69.
Griffin had a one-off lead and played the last hole, but found an awkward place in the rough with his drive.
He made the edge of the green with his second, 59 feet from the flag, and then ran a five-foot putt to make the par and win the title.
"I learned that you don't have to win," Griffin said after his victory, which earned him $ 1.3 million in prize money.
"If you put all that pressure on yourself, it can be counterproductive. Thinking like that helps me take the pressure away."