Min Woo Lee secured his maiden European Tour title with a two-stroke victory at the Vic Open on Sunday.
With strong winds gusting over 60km/h on Saturday at the links layout, Lee finished his third round of four-under-par 68 in brilliant style by eagling the final hole.
"It's incredible, I have got to think it through", said an ecstatic Lee of clinching his first tournament.
Sweden's Madelene Sagstrom leads the women's event in 13 under, a shot from Ally McDonald of the United States, with Stephanie Meadow of Northern Ireland as the best positioned British challenger and five shots back in a draw 11.
The 21-year-old's elder sister Minjee Lee is a five-time victor on the LPGA Tour and sits five shots off leader Ayean Cho in the simultaneous women's event.
"If they hadn't slowed up the greens, I think it would be unplayable, but they've done a great job of putting the pins in the right spots and slowing the greens down".
"I thought coming in I had a really good chance because I was hitting it really well but I think I impressed myself with the game this whole week".
Starting at No. 10, Sagstrom opened with birdies at five of her first seven holes before finishing her round with birdies on each of her last three holes. Today I came out with a really hot start and then in the middle kind of just got dry there for a little bit.
English veteran Laura Davies (77) trailed by two strokes after the first round but missed the cut along with Karrie Webb, whose 70 left her a shot behind Davies after an opening 75.
Marcus Fraser and fellow Australian Travis Smyth both shot 70 to join Frenchman Robin Sciot-Siegrist at 14 under, two shots clear of another Australian in Jake McLeod (67).
After earning his European Tour card at qualifying school a year ago, Sciot-Siegrist is on the verge of a big payday in his first trip to Australia, having signed for the day's lowest round of 64.
The tournament is also sanctioned by the Australasian PGA men's tour and European Tour and the European and Australian women's tours.
After signing for a flawless eight-under 64 on the Creek Course and consequently a two-shot lead on Friday, Sciot-Siegrist slipped to a four-way share of fourth on Saturday as he struggled to navigate high winds in the Beach Course.