Never write this Argentina team off!

Messi, who has looked shattered for the last 20 minutes, goes on a surging run before teeing-up Angel Di Maria with a delicious pass.

The Real Madrid man fires a low finish beyond the despairing hands of Diego Benaglio.

Utter heartbreak for Switzerland.

Alexander Plumb:, external Belgium and USA are rubbing their hands at playing either the Swiss or Argentina in the quarter-finals.

Ryan Konkolewski:, external The worst match I've ever seen and I used to referee Sunday League.

Charlotte Horne:, external This match is painful.

It's gone very quiet inside the ground, which is full of mostly Argentina fans.

Messi is struggling. He looks exhausted. Both teams look as though they are resigned to penalties.

Former England defender Danny Mills
BBC Radio 5 live

"Angel Di Maria has been the liveliest player for Argentina. There has been the odd moment from Lionel Messi but not enough. The last 10 minutes will be fascinating. You do not want to make a mistake. Both teams will be desperate not to lose this game."

Image source, AP

The South Americans are patiently building from the back.

Another attempt by Angel Di Maria deflects off a red shirt and leads to a corner.

It comes to nothing. Switzerland bring on midfielder Blerim Dzemaili for Admir Mehmedi.

Mortan Enni: I get the feeling a scrappy goal will end this match. The Swiss are waiting for penalties and Argentina are hoping for some Messi brilliance.

Ten minutes away from penalties.

Alice: Messi has worked twice as hard as any of the Argentines. If he had been on the end of some of his own passes they might have a goal.

Marc, London: If France had finished second in their group, they would probably have beaten Argentina and would have avoided Germany in the quarters. An easier route to the final.

Former England defender Danny Mills
BBC Radio 5 live

"What a fantastic save that was by Diego Benaglio. He flew to his left-hand side and with his right hand diverts Angel Di Maria's shot over the bar."

Out of nowhere Angel Di Maria lashes a goal-bound shot from the edge of the area that has Diego Benaglio scrambling across his line to turn over.

He's not a happy man. Lionel Messi is being shut out. Penalties are looming and Switzerland's small pocket of fans are getting louder and louder.

Former England defender Danny Mills
BBC Radio 5 live

"This has got penalties written all over it."

We're back under way.

Joe Wedgwood:, external As someone who's always lived and breathed football, I can't quite believe how disillusioned diving has made me with football.

Alexander:, external If this goes to penalties I don't fancy Romero, he's the lesser goalkeeper.

Colin Reardon:, external I can't see either the Swiss or Argentina winning the World Cup on this performance.

Image source, EPA

Half-time in extra time arrives with the game still deadlocked.

Anxious times for Argentina's army of fans. Time for someone to step forward but Messi looks exhausted.

Image source, Getty Images

Penalties are on the horizon.

Former England defender Danny Mills
BBC Radio 5 live

"Play is really starting to get stretched now. After a long and tiring game, chasing the ball is not easy. Switzerland have got to remain focused. If they can take this to penalties it will be a fantastic result for them."

A huge roar inside Arena de Sao Paulo as Gelson Fernandes evades Javier Mascherano's attempted hack.

Argentina are running out of ideas. Half-time of extra time is fast approaching.

Steve Thomasson: This game is almost as bad as watching England.

Bekele Best: Switzerland will win 5-4 on penalties.

Ian Perkins: Go straight to penalties and give me some excitement.

Not as nervous as Alejandro Sabella will be feeling right now, Roger.