Edinburgh fly-half Greig Laidlaw was the match-winner for Scotland after kicking a last-gasp penalty to secure a first victory in Australia over the Wallabies since 1982.
In torrential conditions at the Hunter Stadium, Scotland were under the cosh for the majority of the match but some heroic defence kept Australia at bay.
Scotland had led 6-3 at halftime after Laidlaw landed a brace of penalties and although Mike Harris brought Australia level, an offence at the scrum gave the Edinburgh half-back the opportunity to make himself a hero.
It was a chance the 26-year-old seized as Scotland banished memories of their Wooden Spoon in the Six Nations.
The victory was all the more impressive for a side featuring debutants in the form of Edinburgh full-back Tom Brown, centre Matt Scott and Glasgow prop Ryan Grant – all of whom had made their mark in the RaboDirect PRO12 this season.
And Laidlaw reserved special praise for the front row’s gritty performance.
He said: “One to 15, the guys were absolutely outstanding,” said Laidlaw. “They defended as a team, as a sort of blue wall across the park.
“That’s something we have talked about as a team, and personally I’ve been working hard on it. I like to think it’s been coming through.
“When we look back on the game, the defence has won it for us.
“It was really a kick for the guys in the scrum because before that they were outstanding to force the penalty.
“It was probably the toughest kick I have ever had from in front of the posts. I was slightly worried about the weather because it was pretty messy all night.
“But I was delighted when the ball went through the posts at the end.”