Jeju - Justin Thomas holed a two-foot birdie putt at the second sudden-death playoff hole on Sunday to beat Marc Leishman and win a PGA Tour title in Asia for the third time.
The pair had finished 72 holes at the CJ Cup in South Korea locked at nine-under par, after both missed eagle putts on the 18th hole of a windswept final round of wildly fluctuating fortunes.
Both parred the 18th on their first playoff visit, though Leishman was fortunate to get away with an errant drive and benefit from two free drops: first from behind a wall and then from a service road.
But the burly Australian's luck ran out second time round as his three wood approach carved off on the swirling winds into the water surrounding the island green.
American Thomas then ripped his three wood unerringly to the front fringe of the putting surface and ran a putt to two feet from the flag.
It proved enough as Leishman took a bogey six and Thomas tapped in for the birdie to seal the $1.665 million winner's cheque.
The supremely consistent 23-year-old American will advance to world number three with the win.
It was his sixth victory of a breakout year since winning the CIMB Classic in Malaysia for the second time exactly 12 months ago.
Leading scores Sunday after the final round of the PGA Tour's CJ
Cup at Nine Bridges, Jeju Island, South Korea (par 72, USA unless
279 - *Justin Thomas 63-74-70-72, Marc Leishman 66-72-71-70 (AUS)
(*Thomas won on second sudden-death playoff hole)
280 - Cameron Smith (AUS) 69-68-73-70
282 - Whee Kim (KOR) 68-70-72-72
- Pat Perez 69-71-75-68, Jamie Lovemark 70-74-68-71, Brian Harman
68-72-72-71, Luke List 68-67-76-72, Scott Brown 66-70-71-76, Anirban
Lahiri (IND) 69-71-69-74, Patrick Reed 66-72-76-71, Jason Day (AUS)
68-74-71-71, Rafa Cabrera Bello (ESP) 71-70-72-71, An Byeong-Hun (KOR)
285 - Ian Poulter (ENG) 71-71-73-70, Branden Grace (RSA) 72-67-74-72, Chez Reavie 66-72-74-73, Lucas Glover 69-67-74-75
286 - Charles Howell III 67-72-78-69, Ollie Schniederjans 67-72-76-71, Kyle Stanley 68-71-73-74, Paul Casey (ENG) 72-71-69-74
287 - Morgan Hoffman 73-71-69-74, Nick Taylor (CAN) 68-72-72-75
288 - Adam Scott (AUS) 72-75-70-71
289 - Tony Finau 67-75-75-72, Harold Varner III 69-72-73-75