Ryan Palmer landed the third PGA Tour title of his career as he won the Sony Open in Honolulu at the 72nd hole from Robert Allenby.
Having duelled all day in the final group of the day, Australian Allenby missed a 10-foot putt at the last to leave fellow 54-hole leader American Palmer with a tap-in birdie for victory at the par-70 Waialae Country Club.
Palmer's four-under 66 gave him a one-stroke victory at 15 under par over Allenby (67), with Steve Stricker a further shot back following a 66.
Retief Goosen had earlier set a low target with an eight-under-par 62 and the South African held the clubhouse lead until Stricker finished in the third from last group.
In ideal conditions, Goosen had recovered from an opening bogey to send down nine birdies around the par-70, 7,068-yard Hawaiian course and match his career lowest round, scored at the 2001 Scottish Open at Loch Lomond.
The 62 moved Goosen to 12 under par for the tournament, with Allenby and Palmer going out in the final group on 11 under.
Allenby opened with a birdie with Palmer doing the same at the third before both bogeyed the fourth hole to fall back to 11 under.
Palmer bounced straight back, though, and moved into the outright lead with birdies at the fifth, eighth, and 10th to get to 14 under, Allenby having recouped a shot at the ninth.
World number three Steve Stricker also moved into contention with six birdies and a bogey getting him to 13 under after 13 holes and when Palmer dropped a shot at the 11th the Americans were in a tie for the lead.
Allenby made it three with a birdie at the 12th, but then Palmer continued his rollercoaster and after going birdie, bogey, he went birdie, bogey, birdie to end up back at 14 under.
Stricker fell away with a bogey at the 15th but Allenby again kept pace with another birdie at the same hole.
With Allenby and Palmer on 14 under, Stricker gave himself a chance with a birdie at the 17th but failed to sink a birdie putt at 18 to close with a 65 at 13 under.
The leaders went to the par-five final hole in a tie with both men missing the fairway right with their tee shots. Palmer came up short of the green while Allenby was also left with a pitch after his approach ran out the back of the green and up against a camera tower.
The Australian took a drop but got a bad lie, nevertheless rolling his ball to 10 feet from the hole.
That left Palmer with a chip-in for victory. He rifled his ball straight against the flagpole and instead of flying beyond the hole it stopped inches from the hole.
There was more fortune for the American when Allenby missed his putt and Palmer stepped up to tap in for victory.
Goosen finished alone in fourth while a 64 from Charles Howell III sent him to 12 under in a tie for fifth place with Sweden's Carl Pettersson (66) and Davis Love III (67).
England's Justin Rose finished strongly with a 64 to get to eight under and a tie for 12th on his 2010 debut, his first and third rounds of 72 and 71 preventing a higher finish having posted a second-round 65.
