Darren Cave
Former Ireland centre on BBC Radio Ulster

Really impressive defensive set from Australia, with Angus Bell winning the penalty in the end.

Stuart McCloskey gets his sizeable paws on the ball to win the turnover for Ireland, who kick it downfield again.

Ireland are getting their hands on the ball but Australia get over it to win the penalty.

That was all rather flat from the visitors.

Jamison Gibson-Park is almost in as Ireland look to immediately respond but the hosts somehow manage to clean things up.

Darren Cave
Former Ireland centre on BBC Radio Ulster

That's a great start from the Wallabies. It was great pressure. When they got the ball, they just kept it through the phases.

There was nothing that exciting about it - it was quick ball, good footwork, good hands and just really patient.

The Wallabies are motoring in the early stages here and have the penalty advantage.

They are now five metres out and have all the momentum.

Carter Gordon clears the ball once again and we've our first line out.

Dan Sheehan to throw, and it's lost as Angus Bell claims the loose ball.

Australia claim the kick off and hammer it downfield.

Sam Prendergast returns the favour, but it's too long and Carter Gordon can claim it for the mark.

Off we go in Sydney!

James Hume
Ulster centre on BBC Radio Ulster

It was pretty emotional when Angus Bell was leaving, as I got pretty close with him in the six months he was here.

There's no stopping for him and it'll be good to see how he goes today.

Lovely stuff all round.

It's going to be tricky, but I'm going to try and not compare this one to the New Zealand v France game earlier, which was an absolute barnstormer.

Let's see what the Wallabies and Ireland can produce. If it's even half as good then we're in for a treat.

As there is around most of the globe, there's a pretty strong Irish contingent in Sydney and they enjoyed that rendition of Ireland's Call.

Over to you, Australia.

It's time for the anthems.

First up it's Ireland's Call.

Conor Murray
Former Ireland scrum-half on BBC Radio Ulster

The Nations Championship is a fantastic idea.

Sometimes at the end of a season, these summer tours can have not much of a meaning. This is a championship and something to play for and a trophy to chase. It's a great idea.

Here come the teams into the predicted lights show in Sydney.

There's also fire and bagpipes, which I didn't see coming.

It's all building the atmosphere nicely.

Let us know your predictions by using the 'Get Involved' icon at the top of the page.

As is the norm for modern-day rugby, the Allianz Stadium in Sydney has been plunged into darkness before the players run out onto the field.

I'm guessing a light show is imminent.

Rory Best
Former Ireland captain on ITV Sports

Sam Prendergast is the man they want to have the 10 jersey. He has had a mixed bag this season, teams have gone after the defensive side of his game.

His passing game is better than anything else we have at Ireland.

Image source, Getty Images

Image source, Getty Images

It's a massive weekend of sport in Australia. Like proper huge.

Yesterday, Australia's World Cup dreams came to an end with a heartbreaking penalty shootout defeat by Egypt in the last-32.

This one in Sydney will be the focus for the next while before three more big sporting events take place in England.

Alex de Minaur is in action in Wimbledon as he looks to get the better of Zachary Svajda in the third round.

Then, on Sunday, there's the small matter of the Women's Twenty20 Cricket World Cup final as Australia will look to beat England on home soil.

There's also Oscar Piastri in the British Grand Prix as he competes at McLaren's home race.

So, as I said, it's massive, and you can follow it all with BBC Sport.

Image source, Getty Images