Patrick Reed won the Tournament of Champions on Monday, after picking up three shots over the last four holes to force a play-off.
Reed birdied the first play-off hole at the Kapalua Resort to overcome Jimmy Walker but it was his finish to the fourth round that stood out, as he surged to 21 under for the tournament.
The 24-year-old American, who qualified for the Tournament of Champions with victory at the Humana Challenge last year, birdied the 15th hole, produced an eagle on the 16th and, despite bogeying the 17th, carded a birdie on the 18th to post a six-under 67.
The eagle on the 16th was the highlight of Reed's round, as he sank an 83-yard chip with his second shot on the par-four hole.
Reed's finish, plus Walker's poor back nine that included on birdie and a bogey, meant a play-off was required to decide the winner in Hawaii.
Reed chipped onto the green with his third shot, 19 feet from the hole on the par-five 18th, before Walker followed that with a chip that went across the green and into the rough.
Walker's second chip gave Reed the chance to putt for the title and the Texas native made no mistake.
On a dramatic final day, Australia's Jason Day posted an 11-under 62 to finish one shot behind Reed and Walker.
Day birdied 11 of his last 14 holes but missed out on the play-off by a stroke, claiming a share of third alongside Japan's Hideki Matsuyama and Russell Henley of the United States.
Chris Kirk matched Day's round of 11 under but was so far down the leaderboard before Monday's play that he finished tied for 14th on 13 under overall.