Dafydd Pritchard
BBC Sport Wales at Stade de Lyon

The ills of modern football, number 47,345,671 (or thereabouts): Why are Wales and Portugal both wearing their away kits?

Surely one of them should be wearing their home red strip?

Daryl Wing: Cheering on the Scot in the tennis and the Welsh in the football. Sad times for an Englishman.

Louise: Come on my boyos do us proud!

Sunday Adekanyi: The Portuguese defence cannot stop Bale from scoring.

Cristiano Ronaldo picks up a loose ball in midfield and drives on, he sizes up Ashley Williams, who lunges in - and to the shock of everyone in the stadium referee Jonas Eriksson says play on!

Williams got a touch on the ball but that was a foul all day long...

Danny Murphy
Former England midfielder for BBC Match of the Day

Image source, AFP

What a rendition of Wales' national anthem - the hairs on the back of my neck stood to attention. 

It's been a good start from Wales, passing the ball well. But they will be without the creativity of Aaron Ramsey, who was so pivotal in the last game.

Kevin Ratcliffe
Former Wales captain on BBC Radio 5 live

It's 11 v 11. Anything can happen. But I do think Wales' best chance is to win it in 90 minutes. Portugal are maybe a bit inexperienced in midfield and they're perhaps a bit suspect at the back too. There are one or two areas where Wales can hurt them.

James Chester is playing on the left of this Wales back three tonight, James Collins on the right. Joe Allen chops down Raphael Guerreiro for the first foul of the night. 

John Hartson
Ex-Wales striker on BBC Radio 5 live

Wales have got a big chance. Anywhere near the performance they produced against Belgium, and why not? Yes there's been a few enforced changes but they're all well drilled. 

Defend strong. We cannot afford to give any free-kicks away on the edge of the box.

Mint green Portugal v liquorice Wales, the men in black and grey kick us off and put together a neat move down the right, where Andy King overhits a cross. 

We are up and running!

Portugal: Rui Patricio, Cedric, Bruno Alves, Fonte, Guerreiro, Danilo Pereira, Joao Mario, Renato Sanches, Adrien Silva, Nani, Ronaldo. Subs: Lopes, Carvalho, Joao Moutinho, Eder, Vieirinha, Andre Gomes, Rafa, Eliseu, Quaresma, Eduardo.

Wales: Hennessey, Gunter, Chester, Collins, Ashley Williams, Taylor, Allen, Ledley, King, Robson-Kanu, Bale. Subs: Fon Williams, George Williams, Edwards, Richards, Cotterill, Vokes, Jonathan Williams, Vaughan, Church, Ward.

Referee: Jonas Eriksson (Sweden) 

Match 49 of Euro 2016. Let's do this. 

Richard: Our anthem is always special but I feel it might be turned up a notch this evening.

Cal Riley: I think everyone is a secret Wales fan tonight.

Kevin Ratcliffe
Former Wales captain on BBC Radio 5 live

Wales have never been afraid. But when they are favourites and have got to take the game to somebody else, that can be when we suffer. We're a counter-attacking side, we've proved that time and time again, but with more experience we'll get better at that.

James Collins just wiping his eyes before the Wales anthem kicks in. A powerful and emotional night for all of these players - and the thousands in the stands, the millions back home.

A superb rendition. A sea of red at one end of the Stade de Lyon.

Good luck with that by the way. Here we go...

It's nearly anthem time. Fancy joining in? Here's our phonetic guide so you can sing along, even if you don't speak a word of Welsh.

The teams are in the tunnel. The biggest night in Wales' footballing history is about to finally get under way.

Ground filling up, music pumped up, pre-match children and shirt ritual almost under way.

Wales potentially 90 minutes from the final of Euro 2016...

John Hartson
Ex-Wales striker on BBC Radio 5 live

James Collins will go in and do his best to adjust to the three centre-back system that Wales play, but also I think he's a real threat from set pieces. He'll go and put his head on it, and defensively too he is strong in the air. We know how important that part of the game is for Portugal.

There seem to be a ludicrously large amount of Welsh people in New York watching this game - if our Twitter feed is anything to go by anyway.

What's going on?

Not sure I've ever heard 'Smells Like Teen Spirit' played at a match before. Twenty-five years old. Extraordinary.

Who are you backing? The poor performances of Portugal so far make Wales favourites?

Or will the Portuguese experience of reaching the final stages make them strong when it matters?