Conor McNamara
BBC Radio 5 live at Twickenham

Wales head coach Warren Gatland on ITV: "We have to perform better than we did against England. Australia were outstanding last week. We had a short turnaround before Fiji, but have had nine days to prepare for this game and we have trained well. Mentally we are in a good place, and excited about this evening. We want to put Australia under pressure and play some good rugby."

Richard Williams
BBC Sport at Twickenham

"Commentator Gareth Charles has just summed this match up nicely on Radio Wales. 'It's not a must win game, but it's a want to win game.'

"Both teams are through to the quarter-finals but neither wants to be in the same half of the draw as the Springboks and the All Blacks.

"And former Wales fly-half Jonathan Davies has been heckled by David Campese while doing an interview.

"Well, as hecklers go, they don't come much better than the former Wallaby winger."

Half and half scarves a regular source of fevered debate with us - now we get half and half shirts...

Perfect for all the Welsh Aussies out there...

As you would expect from a man as stoic as Warren Gatland, he isn't fazed by Wales' miserable record against the Wallabies. In fact, he's taking that run as a positive.

"The last five times against Australia there has been a score in it. We've been ahead in games and not been able to finish it off," says Gatland.

"You learn from that, and experience comes from that and it showed in the autumn against South Africa. We closed that game down, and were brilliant in the last 15 minutes against England, coming from behind and showing maturity to close that game down."

Image source, AP

Chris Jones
BBC Radio 5 live rugby commentator at Twickenham

A raucous welcome for Wales at Twickenham.

As Wallabies coach Michael Cheika probably knows...it is all over in Newcastle! As does the whole of the Tyneside no doubt following the roar that greeted Scotland's nervy win at St James' Park.

Vern Cotter's side join Wales in the last-eight - but will they play them? Only 80 minutes of blood, sweat and tears before we find out.

Richard Williams
BBC Sport at Twickenham

"Wales' backs are out on the field at Twickenham along with one Australian - their coach Michael Cheika.

"However, the former Leinster man is taking no notice of Dan Biggar and company as he's transfixed with his mobile phone.

"Is he following Scotland v Samoa live text? Who could blame him?"

Scotland captain Greig Laidlaw has just crossed the whitewash - giving them a 10-point lead and one foot in the quarter-finals. If they hold on for another five minutes, then Wales will know that the prize for beating Australia is another Home Nation clash.

"We are desperate to win this game, as win this group and potentially your road through to quarters, semis and final is a little bit easier than the the other side of the draw," says Wales head coach Warren Gatland. 

"We are desperate to finish off well and win this group, and hopefully give ourselves potentially a second seed team in the quarter-finals."

Fancy having your say on today’s game? Get involved by using #bbcrugby on Twitter. If you're in a far-flung location, or you've decamped to somewhere unusual to watch the match, we want to know about it and we want to see photographic evidence. By the pool? In Vegas? By the pool in Vegas? The best will be posted on here.

Or text us on 81111 – don’t forget to tell us who you are and where you are if texting in, and we'll publish a selection in today's live feed.

Image source, EPA

Richard Williams
BBC Sport at Twickenham

"Welcome to the home of English rugby, proclaims a banner on a footbridge over the A316 on the approaches to Twickenham.

"Well, not today. Twickenham town is awash with green and gold and red and white as Australia and Wales arrive to settle who will emerge on top from Pool A.

"There is an unusual mix of shirts and accents - old South Wales and New South Wales - around the hot food stalls set up in the front gardens of enterprising local residents.

"It looks as if every Australian in London has managed to secure a ticket. It's going to be quite a party."

Image source, PA

Talking of Scotland... they are currently nearing the end of a humdinger of a must-win clash against Samoa. The Scots, who are through to the last eight with a win, lead by three points. With 10 minutes left. Head over here to find out if they can hang on. (Make sure you come back to this page afterwards. Please.)

Of course, Wales are already safe in the knowledge that their spot in the World Cup quarter-finals is assured.

Gatland's side wounded England a fortnight ago, with Australia adding the killer blow as the host nation crashed to the canvas last week.

But that does not mean today does not matter. Oh no. Whoever loses faces the less-than-appetising prospect of South Africa in the last eight. The winners? Either Scotland or Japan - and an easier path towards the final.

Hello! It is a date etched into millions of Welsh minds, a day which could prove to be one of the greatest in the nation's sporting history. A day which could banish dark memories of that defeat by Western Samoa at the 1991 Rugby World Cup. A day which could consign that penalty miss by footballer Paul Bodin against Romania two years later to the back of the mind.

Later today, the football team travel to Bosnia-Herzegovina. One single point which will see them qualify for Euro 2016 and end their 57-year absence from major tournaments.

But first, the focus of our attention - and that of a whole nation - is on the rugby union team. On Twickenham to be precise. Where Warren Gatland's men face Australia in a bruising brawl to determine who emerges from the Group of Death as the last man standing.

Image source, PA

Seconds after those shiny new 2015 calendars and diaries were bought and unwrapped, every Welsh sports fan grabbed a thick red marker pen. They furiously flicked through the pages, past Easter, past the summer holidays, straight for early autumn.

Ah there it is! Saturday, 10 October. The nation's date with sporting destiny. 

A big ring drawn around the date. Holidays booked. Travel planned. Fingers crossed.

Image source, PA