Three more birdies and two bogeys saw the 41-year old OH native home for his maiden win.
"I'm tearing up. I'm not going to lie", Armour said after finishing on 19-under par 269 a day after his son Patrick's ninth birthday. "There's a lot of emotions running through my head right now". It's a validation that you don't have to hit it 330 in the air to still win golf tournaments.
"I hit fairways and greens, and somehow it worked".
Prior to Sunday, Armour had notched just four top 10s on the PGA Tour since turning pro in 1999 and first earning his Tour card in 2007.
Armour, who has never won on the PGA Tour, had eight birdies in the round but three consecutive bogies from the fifth hole cost him a sparkling score as he ended the day at 15-under 201.
"I don't what else I would do", Armour said. Thank God. I love her. Forced to play in the Web.com Tour Finals Series to try to earn back his card, he secured it with a runner-up finish at the Nationwide Children's Hospital Championship (on his old college course at Ohio State).
Chesson Hadley used a 68 to finish second at 274 with fellow American Jonathan Randolph, playing on his home course, two strokes back after a 67 that included seven birdies in his first nine holes.
Prior to Sunday, the only win of Armour's professional career came in January 2016 when he won the Panama Claro Championship on the Web.com Tour, the 217th tournament event of his career.
Two shots further back were Smylie Kaufman, Brian Stuard and Scott Strohmeyer in a tie for fourth place.
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