Ormsby recorded a final round 68 at the Hong Kong Golf Club in Fanling to become the third Australian to win the title in the last four years.
Following in the footsteps of Scott Hend in 2014 and defending champion Sam Brazel, Ormsby survived a final hole bogey to hold off Julian Suri and Paul Peterson from the USA, Sweden’s Alexander Bjork and Spain’s Rafa Cabrera Bello to win the title by one shot and a winner's cheque for €282,000.
The 37-year-old has also jumped from 319th in the world rankings to 118th.
Ormsby could hardly contain his emotions after securing the first European Tour title in his 264th attempt.
“It was a bit of a weird feeling watching Rafa with a short par putt on 18 to make it a play-off," he said after the Spaniard missed a short putt at the 72nd hole to take the event into extra time.
"You don't want to win like that but I'm sure a lot of guys have. I just missed one there, too. I don't know, it's not the way you want to do it, but at the same time you take them how you can get them.
“This feels amazing. I’m trying to hold it together here but I’m pretty stoked. Well, not pretty stoked: Very stoked. I played solid all day, hit a lot of greens but the putter wasn't quite behaving. You saw that at the last which was disappointing to three-putt but you have to take them when they come so I won’t be complaining too much.”
Of the other Australians in the field in Hong Kong, defending champion Brazel finished 23rd, Scott Barr 31st, Terry Pilkadaris 57th and Hend 62nd.
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