VIDEO: Australia v Argentina highlights

Australia joined New Zealand in reaching a fourth World Cup final as they battled past Argentina at Twickenham on Sunday.

The Wallabies outscored their opponents four tries to none in their 29-15 win, but only wrapped up the game with ten minutes remaining.

Rob Simmons scored their first try with barely a minute on the board, followed soon after by Adam Ashley-Cooper’s first try.

The Wallaby winger had a second in the first half, on his way to a hat-trick, as Australia led 19-9 at the break.

But Argentina fought back through the boot of Nicolás Sánchez and trailed by just seven points with ten minutes to go.

That’s when Drew Mitchell went on a mazy run down the left, breaking tackles before feeding Ashley-Cooper for his third to seal the win.