Singapore - Veteran Thai Prayad Marksaeng won the Singapore Open by a single stroke on Sunday after tournament favourite Adam Scott blew his chances of a fourth title by hitting into water twice.
Prayad, who turns 51 later this month, became the second oldest winner on the Asian Tour, just missing the record set by India's Mukesh Kumar, who won the 2016 Indian Open at 51.
Prayad shot a final round of four-under-par 67 to finish at nine-under 275 and capture his 20th title since turning professional in 1991.
Four players - Phachara Khongwatmai of Thailand, Juvic Pagunsan of the Philippines, Jbe Kruger of South Africa and the defending champion, South Korea's Song Young-Han - finished tied for second on a thrilling final day.
Scott, chasing his fourth victory at the Sentosa Golf Club, led by a stroke heading into the final round but the Australian squandered his chances with a final round of 74 tied for ninth at six-under.
The 2013 US Masters champion still had a share of the lead after six holes but saw his chances of winning sink when he chipped into the water on the seventh hole then hooked his drive into the sea on the 15th.
Prayad started the final round four shots behind Scott in a tie for 12th but got off to strong start with three birdies on the front nine.
He dropped a shot on the 11th but birdied the 13th and final holes then endured an anxious two hour wait in the clubhouse before his victory was confirmed.
Six different players had a share of the lead at various times in the last round but none were able to catch Prayad once the wind picked up in the afternoon with Phachara closing with a 71, Pagunsan with 70 and Kruger and Song each signing for 69.
Leading final scores on Sunday after the fourth round of the Asian Tour's Singapore Open at the Sentosa Golf Club (Par 71):
275 - Prayad Marksaeng (THA) 71-69-68-67
276 - Phachara Khongwatmai (THA) 66-72-67-71, Juvic Pagunsan (PHI) 71-66-69-70, Jbe Kruger (RSA) 68-69-70-69, Song Young-Han (KOR) 68-69-70-69
277 - Park Sang-Hyun (KOR) 69-71-67-70, Rikuya Hoshino (JPN) 71-70-69-67, Satoshi Kodaira (JPN) 65-72-69-71
278 - Adam Scott (AUS) 68-67-69-74, Hideto Tanihara (JPN) 65-72-69-72
279 - Yuki Inamori (JPN) 67-74-67-71, Tirawat Kaewsiribandit (THA) 70-69-66-74, Sergio Garcia (ESP) 71-68-71-69, Kang Kyung-Nam (KOR) 65-73-71-70, Shubhankar Sharma (IND) 69-68-72-70, Angelo Que (PHI) 67-69-69-74, Pavit Tangkamolprasert (THA) 66-71-71-71.