Spain's Gonzalo Fernandez-Castano won the storm-delayed Singapore Open at the second play-off hole on Monday.
The 31-year-old sank a nine-foot birdie putt on the par-five 18th to defeat Juvic Pagunsan of the Philippines who pushed his putt inches wide of the cup.
Lightning had forced the players off the course in an event that had been shortened to 54 holes by the weather.
Both ended on 14 under, Fernandez-Castano surrendering a four-shot lead over the back nine.
Pagunsan had appeared to have done enough to seal victory as his late surge coincided with a bout of poor putting from Fernandez-Castano.
The Spaniard suffered three bogeys over the final nine holes, while Pagunsan sank a 10-foot birdie putt on the last to sign off with a 67 and pull level at the top of the leaderboard.
Fernandez-Castano hit his tee-shot into the water but the four-time winner on the European Tour engineered a superb escape, sinking a 20-foot putt to ensure a par five, a round of 72 and a play-off.
The shoot-out was twice interrupted by rain and lightning strikes before being delayed until Monday.
Pagunsan, 33, had a chance to win on the first extra hole, but he pushed a five-foot birdie putt wide and when he missed from 10 feet the second time they played the 18th, Fernandez-Castano made him pay to record his first European Tour victory in three years.
"This is probably the most nervous I've ever been on a golf course," said Fernandez-Castano, who admitted he had been unable to sleep on Sunday night.
"[Sunday] was the type of pressure I have never felt before. I've never been in the lead with a four-shot margin going into the last nine holes. I hope I've learned from that."
Anthony Kim narrowly missed out joining the duel after producing a round of 64 that contained eight birdies.
The American was joined in third place by South Africa's Louis Oosthuizen, the 2010 Open champion compiling a fine 65 that included seven birdies and just one dropped shot.
England's James Morrison, handily placed three shots off the lead after the second round, failed to close the gap after bogeys on the 11th and 18th.
Compatriot Justin Rose was tied for ninth on 10 under after shooting a final-round 69, while Graeme McDowell closed with a fine 66 to end eight under par. American Phil Mickelson was well down the field on five under.