Five players finished the regulation 72 holes tied on 17-under at Sea Island Resort including Billy Horschel, the 2014 FedExCup champion, who was eliminated after missing a short par putt on the first extra hole of the largest PGA Tour playoff of the year.
"I just blocked it," said Horschel, who narrowly missed a birdie putt that would have won the tournament before flubbing the two-foot par putt to remain in the playoff.
Hughes, trying to complete a wire-to-wire win after opening with a 61, squandered a chance to clinch his first victory on the second hole of sudden death when his 10-foot birdie putt broke away from the hole at the last instant.
The Canadian also failed to take advantage of birdie chances on 15 and 16 in regulation, but showed his mettle when he sank a five-footer for par at the 18th to join the playoff.
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Norlander finished with a flourish for his closing 65, knocking a nine-iron approach shot to three feet for birdie, while Barber missed a 12-footer for birdie at the last in posting a 66.
Villegas reached the playoff with a great finish after trailing by two with three holes left, sticking a wedge shot close for a birdie on 16 before rolling in an 18-foot birdie from the fringe at the par-three 17th in registering a 68.
The Colombian assured himself of his first top-10 finish since winning the 2014 Wyndham Championship.
Tour rookie Pan Cheng-Tsung of Taiwan finished in a four-way tie for sixth after posting a final-round 71.
(Reporting by Larry Fine in New York; Editing by Peter Rutherford)
