Scott Hend continued Australia's impressive run on the European Tour this season by taking the True Thailand Classic on Sunday.
He held off the course record charge of home hope Piya Swangarunporn to take his second tour title.
The 42-year-old Queenslander birdied his 17th hole and went on to sign for a four-under-par 68 and an 18-under total.
That edged Piya by one-shot after the unheralded Thai, ranked 798th in the world, threatened an unlikely victory with a blistering 63.
Piya had already made six birdies and an eagle when he rolled in a tricky 15-foot to pick up another shot on the final green and snatch the lead for the first time, drawing a flurry of fist pumps and cheers from the crowd.
But overnight leader Hend quickly responded, rolling in a birdie two on the 14th at Black Mountain Golf Club in Hua Hin where he was runner-up a year ago.
The big hitting Australian, whose previous European Tour win came at the 2014 Hong Kong Open, then drove the green with his tee shot at the 330 metre par-four 17th and walked away with a key birdie after a solid short putt to go ahead for good.
More power hitting saw him find the green in two at the par five last as he took three putts to close out victory at the €1.5 million event and become the fifth different Australian winner in 13 European Tour events this season.
"It's bloody awesome." - Scott Hend
Belgium's Thomas Pieters (68) finished third on 15-under, with American Peter Uihlein (70) fourth and Swede Pelle Edberg (70) fifth at the event co-sanctioned with the Asian Tour.
"Last week I did not really have any patience and this week I just hung in there," said Hend, who only arrived in Thailand at 1am on Wednesday after making the long journey from Miami, where he shot 22 over par to finish 63rd in the 66-man field in the WGC-Cadillac Championship.
"If I did make a mistake I didn't get upset about it and just rolled with the punches.
"For Piya to shoot nine under was an amazing score out there, he has obviously played extremely well, but I knew I just had to cruise along and do what I do best and that's get in position and make birdies.
" This year I just sat back and let the golf course come to me and I'm lucky enough to be here with the trophy. It's bloody awesome."
