Felipe Aguilar snatched victory from Anders Hansen after a remarkable finish saw him win The Championship at Laguna National in Singapore.
The Chilean birdied the 17th hole but still trailed Hansen by one shot as he stepped onto the 18th hole. A remarkable eagle on the final hole saw him finish his round of 62 and 22-under par for the tournament.
Aguilar only needed 28 shots to complete the back nine and seal victory by one stroke. Four consecutive birdies on holes 10, 11, 12 and 13 were followed up with further birdies on 15 and 17.
Overall, his 10-under final round consisted of six birdies and the eagle on the last was enough to see of his challengers.
Denmark's Hansen had been the leader for the majority of the day and held a three-shot lead after a birdie on the 12th hole. But a combination of the magnificent finish from Aguilar and a bogey on the 16th from the 43-year old saw him lose the lead.
That bogey proved pivotal as he finished just one shot back in a share of second position after a round of 67. American David Lipsky joined Hansen with a round of 65 leaving them both on 21-under for the tournament.
Thailand's Panuphol Pittayarat had been in contention since Friday but a disappointing final round of 74 saw him tumble down the leader board to a share of 11th place.
Pittayarat and Hansen had led after the third round with Aguilar four shots adrift after rounds of 65, 67 and 72.
But he hauled back the deficit in remarkable fashion to seal his second victory on the European Tour and claim the $1.5 million prize at the co-sanctioned event. His first success came when he triumphed in the Enjoy Jakarta Astro Indonesia Open in 2008.
The 39-year old admitted that he felt he wasn't in contention at the beginning of the day but after a decent front nine he knew he had an opportunity.
"Yesterday, I didn't have a good round and you figure that you're so far back that you have no chance," Aguilar told reporters after his win.
"But today after I shot two-under on the front nine, I knew I had to go deep and I hit the ball the best I ever have and went for every single pin."
He added: "Eight under on the back nine to win is pretty strong, especially making the last one on 18 being between clubs. This is something very, very special.
Aguilar also described his approached shot on the 18th which he holed to make an incredible eagle.
"I was right in between clubs and with the adrenaline you don't want to hit a half shot. So I took a hard pitching wedge and it went in - it was very special finishing like that."
India's Rahil Gangjee finished fourth on 19-under par while English duo Chris Wood and Tommy Fleetwood finishing in five and a tie for eighth respectively.
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