Jordan Spieth finished runner-up at the Singapore Open on Monday after South Korea's Song Young-han held his nerve to beat the fast-finishing world number one by a single stroke.
Among 13 players back at Sentosa Golf Club at the break of dawn after Sunday's final round was suspended because of a thunderstorm, Spieth sank a five-foot birdie putt on the last hole, where he had marked his ball overnight, completing a final round of 5-under 66 to finish at 11-under 273.
Song, resuming on 12 under and playing two groups behind Spieth, drained a 12-foot par putt on the 16th then made par at the last two holes to win the co-sanctioned Asian and Japan Tour event.
China's Liang Wen-chong, who completed his final round on Sunday, finished outright third at 10-under.
Ranked 204th in the world, Song had led the tournament from the second round and was five in front of Spieth heading into the final round but had to retain his composure in the closing stages as the American narrowed the gap.
Spieth had struggled with his putter all week in the stifling humidity of Southeast Asia but the 22-year-old got his game together in the final round to mount a late challenge, reeling in six birdies to put pressure on Song, who was chasing his first win as a professional after two second-place finishes on the Japan Tour.
Song managed just two birdies in his final round of 70 and dropped a shot at the seventh after an erratic drive but made a string of clutch saves to par the last seven holes, finishing with a simple tap-in at the 18th to secure the title