ST. SIMONS ISLAND, Ga. — Tyler Duncan made a 12-foot putt on the second hole of a playoff with Webb Simpson on Sunday in the RSM Classic for his first PGA Tour title.

Playing two groups ahead of Simpson on Sea Island’s Seaside Course, Duncan birdied three of the last four holes in regulation for a 5-under 65. He two-putted the par-5 15h for a birdie, made a 6-footer on the par-3 17th and a 25-footer on the par-4 18th.

Simpson birdied 15 and 16.