Reed carded a closing 70 to finish on nine-under 275 at
Bethpage Black in Farmingdale on New York's Long Island.
Fellow American Sean O'Hair (66) and Argentine Emiliano Grillo
(69) were joint second on eight-under.
With his fifth victory on the PGA Tour, Reed secured a spot on
the United States team for next month's Ryder Cup.
He also vaulted to the top of the FedExCup points list after the
first of the four playoff events.
Reed was delighted with his win but acknowledged his game needed
work after he recorded bogeys at the 16th and 18th holes.
"I have worked pretty hard with my coach for the past couple of
weeks," the 26-year-old said in a greenside interview.
"The game shows I'm moving in the right direction but there are
some things I need to work on. As the pressure started building
I started going back to my old pattern, hit some shots left."
(Reporting by Andrew Both; Editing by Tony Jimenez)
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