His tee shot had flown over the island green on the par-3 17th, bounding into a greenside hazard and bouncing between a few rocks within it. Sharing the lead at the time with David Lingmerth, Dufner appeared destined for at least a bogey but instead pulled off the most remarkable shot of the tournament to keep his victory hopes alive.
"I thought it was in the water. I got a great break," Dufner said. "Sometimes those things happen, and you need those to happen to win."
While Dufner's ball remained in the hazard, he had a narrow alley through which he could play the ball back onto the green. His chip rolled across the putting surface and tracked for the hole, hitting the flagstick and setting up a tap-in par to keep him tied with Lingmerth.
"It was kind of like what you see over at the British Open. It was on some hardpan," he said. "Kind of leaned the shaft a little with the face open and tried to hit one where you get a lot of grip. It was grabbing; I thought it was going to sneak in there for a minute."
After scrambling to save par on the first extra hole, Dufner won on the second hole of overtime when Lingmerth's approach found the water. It marked his fourth career victory, and first since the 2013 PGA Championship.
"I'm fortunate to be in this position, and happy to be playing good golf again," he said.