Prop Tadhg Furlong is bounding through the Aussie defence! Can he find support?

Kyle: Brilliant test match. Some performance from Ireland so far. Could easily be another high scoring thriller like England and South Africa was last weekend

The Australian crowd have been kept quiet in the most part in this match, out sung by the Irish, but they're roaring as their team takes a quick tap and go.

The gold shirts dash into the Irish half but once again Peter O'Mahony is a rock at the breakdown, holding off three or four Aussies to win the turnover.

The Irish clear their lines. They're still down to 14 remember.

Image source, EPA

There's a bit of suspicion of a high tackle by the Aussies but the TMO says the initial contact was below the shoulder at least.

Genia is wincing on the sideline, holding his arm which has already been taped up.

Could his series be over?

A blow for Australia. Scrum-half Will Genia has had to be replaced by Nick Phipps.

The indiscipline is still costing Australia. Number eight Caleb Timu tackles an Irish shirt off the ball and straight away after closing the gap, Australia gift Ireland a chance to pull away again.

It's a lengthy kick for Sexton but straight down the middle...

He shanks it. Missed opportunity for Ireland.

Cian Healy is set to the sin bin for his role in collapsing that Australia maul.

Ireland are going to play the next 10 minutes with 14.

Australia now with the maul, closing on the Irish try line...

Respite for the green and gold. Tadhg Furlong is penalised for going off his feet. After 20 minutes of non-stop pressure, Australia finally have their hands on the ball.

Ireland's try scorer Andrew Conway has had to go off with an injury by the way. He was replaced by Jordan Larmour.

"Ireland, Ireland, Ireland," is ringing around Melbourne.

They come again, chasing a long ball. That could have bounced anywhere but falls into Aussie hands.

Still, Ireland can build again. I can't keep up!

So much indiscipline from Australia. Their coach Michael Cheika will be hitting the roof in the stands.

Sexton tempts the Aussie line with a well-timed pass and a yellow-shirted arm stretches out but can't cling on to the ball and knocks on.

Sexton with the penalty from the middle of the field. You know the rest...

Image source, Getty Images

Australia captain David Pocock, the man who could do no wrong last week, now gives away a penalty shortly after the restart.

That allows Sexton to kick to touch and piles yet more pressure on the Aussies. The green shirts are deep inside the Australian half again.

No mistake from Johnny Sexton. He converts his second penalty in these opening 17 mins.

Marika Koroibete's time in the sin bin is over. That sure cost Australia.

What can Ireland work from this line-out?

Not much... Israel Folau nips in to intercept as the ball is spun between the Ireland backs.

But brilliant from Peter O'Mahony though. The Aussies try to break away but the Ireland skipper locks on at the breakdown and forces the penalty.

What is going on? The Australians are a mess. The ball is pinballing around in the Australian half before they boot for touch to take a breather.

"Ireland, Ireland," is the chant from the stands.

Image source, Getty Images

The Aussie scrum breaks down. Ireland changed their entire front row for this game and they couldn't have made a better start.

Sekope Kepu is the man penalised for bringing the scrum down.

This is meat and drink for Johnny Sexton and he slots over the penalty.

Ireland have the Aussies rattled. They've now forced the mistake at the breakdown and Ireland have a scrum on their opponents' 22.

"It's a clear lifting tackle and he's landed dangerously," says the ref.

The Aussie wing is sent to the sin bin. About fair I reckon.