Northern Ireland's Graeme McDowell slumped to a final round 77 at the Johnnie Walker Classic in Thailand to finish 15 shots behind the winner.
Graeme McDowell shot a 77 in the final round at Phuket
The Portrush player, who had opened with an encouraging 67, suffered a triple-bogey eight at the 15th and also dropped shots at the final two holes.
McDowell finished on two over par for the tournament, five behind Irishman Paul McGrane who closed with a 73.
Anton Haig beat Oliver Wilson in a play-off to win his first Tour title.
The 20-year-old South African held his nerve by sinking a birdie at the 18th while compatriot Richard Sterne and Wilson both missed chances.
Haig then holed a six-foot birdie putt at the first extra hole to claim victory.
All three players finished on 13 under, with Retief Gooosen three shots back.