Jane Woolner:, external What a scorcher of a free kick from Messi, beautiful, majestic...

anina m:, external Messi! Absolutely lovely technique!!

Chris Gilbert:, external Lionel Messi is carrying Argentina in this game so far. Beautiful.

Image source, AFP

BBC Match of the Day commentator Dave Woods:

"On a day when Iran need goals and a win they have shown precious little signs of either."

Nigeria may be losing, but they are still going through as it stands. Argentina will play the runners-up of Group E.

Gary Lineker
BBC Sport

"I can't think of another man that excites me quite as much as Messi does."

Dangerous - very dangerous! Lionel Messi has his second of the game, his fourth of the World Cup with a clipped free-kick into the corner.

Goalkeeper Vincent Enyeama gives up on it, just watches it hit the net. I'm not sure he would have got there but have a go!

Image source, Getty Images

Former Premier League striker Jason Roberts
BBC Radio 5 live, Porto Alegre

"That's what you call a tactical foul, a little nudge in his back. Nigeria have given a free-kick away in a very dangerous position."

Great feet from the great man, Lionel Messi is having his best World Cup showing to date. He darts between three Nigerians and wins a free-kick from a clumsy challenge from Ken Omeruo.

Sy in Kent on text: If Nigeria can nick this then Argentina will go into the half of the draw with four other South American teams. Potentially a mini Copa America.

Brilliant effort!

Lionel Messi bends a free-kick up and over the wall from 25 yards out, it's heading into the top bin but Vinent Enyeama gets over quickly to make the smart save.

Will Jackson:, external I have a feeling Aguero's career could be similar to that of Michael Owen's. Immense talent, but always injured. Such a shame.

Alexander:, external Aguero anonymous this world cup, Lavezzi stretches a game, provides width, the injury is a blessing in disguise for Argentina.

objectivekritic:, external Aguero is gradually going the 'Torres' way, these injuries are hampering his progress and could ruin him in the long term.

Argentina have had nearly 70% of the play but - like in their first two games - it's not quite clicking into place. Don't get me wrong, seven points from nine is spot on, but they are not quite hitting peak revs.

Former Premier League striker Jason Roberts
BBC Radio 5 live, Porto Alegre

"It certainly wasn't a challenge on Sergio Aguero. He just went down in the middle of the pitch. If it's a muscle injury, it's a sickening feeling."

Injury trouble in the other game too, as Bosnia captain Emir Spahic has to go off for some treatment. It works though, as he is back on, if not looking 100% right.

Mac Jerry:, external Am i the only one who thinks Vincent Enyeama should play in the Premier League. Two clean sheets already?

Look away now, Manchester City fans. Sergio Aguero is coming off with another injury. He just hasn't been able to get himself right for months now and it's another niggle.

He can leave the field under his own steam but he's tweaked something. Ezequiel Lavezzi is on in his place. Aguero looks gutted.

BBC Match of the Day commentator Dave Woods: "Iran have only conceded two goals in this tournament and they have both been wonderful strikes. That is great testament to the Iran defence but we haven't seen much of their attack so far, that is the problem."

Sergio Aguero hammers a shot into a forest of legs as Argentina look for a second. 100mph stuff.

Tommi on text: Sorry, but why did Iran set up for a 0-0 draw when they had to win? Seems pretty ridiculous to me...