Last-hole eagle as Aguilar snatches Championship
Felipe Aguilar of Chile during round two of The Championship at Laguna National on May 2, 2014 in Singapore - by Roslan Rahman
Aguilar fired eight birdies in a sensational final round but he was still trailing Denmark's Hansen by a stroke when he stepped onto the 18th tee at the par-72 Laguna National Golf and Country Club.
But he heroically eagled the par-four final hole for a 10-under-par 62 and an aggregate score of 22-under 266, one better than Hansen who shot 67 to finish joint second with American David Lipsky.
The eagle at the last completed a jaw-dropping back nine in which Aguilar picked up eight strokes, including four birdies in a row from 10 plus two more on 15 and 17.
The 39-year-old, who started the day four shots back in shared seventh, had rounds of 65, 67, 72 and 62 for his second European Tour victory after he won the Indonesian Open in 2008.
He dashed Hansen's hopes of a fourth European Tour win, while Thailand's Panuphol Pittayarat, the joint overnight leader alongside Hansen, crashed to a 74 which gave him a share of 11th.
India's Rahil Gangjee was three shots back in fourth and England's Chris Wood was fifth. India's Anirban Lahiri and France's Gregory Bourdy were tied for sixth in the $1.5 million, co-sanctioned event.
The tournament was held as the Ballantine's Championship in South Korea for six editions from 2008, but after losing its title sponsor it was hurriedly relocated to Singapore last month.