Four strokes ahead entering the final round at Hamilton Golf and Country Club, MacIntyre shot a 2-under 68 to beat playing partner Ben Griffin by a stroke. On the par-4 18th, the 27-year-old Scottish left-hander two-putted for par from 12 feet, holing out from 1½ feet.
"Goosebumps," MacIntyre said. "It's incredible. It's a dream of mine to play golf for a living. It's been a dream of mine to win on the PGA Tour. ... I just can't believe I did it with my dad on the bag."
"I was in a dog fight there," MacIntyre said. "Obviously, Ben made it difficult coming in the stretch. He played well. It's just incredible to do this with my dad on the bag and have my girlfriend here and I'm sure there's a party back home in Oban."
Griffin had a 65. He parred the 18th after birdieing the previous three holes.
"I fought hard," Griffin said. "It felt like there was a lid on the cup for most of the day for me. I hit so many pretty good putts, I wouldn't say like striped putts, but pretty good putts, and just kept burning edges. A couple bad putts, but stayed patient."
Data source(ESPN)