Another World Cup first (I think) as we have a specified cooling break to alleviate the heat.

Mark from Belfast: I was at Windsor Park when Northern Ireland trounced Russia 1-0 and can guarantee that they are one of the weaker teams in Brazil. In a poor group and they will still struggle.

Russia striker Alexander Kokorin is isolated up front. Fabio Capello may be tempted to make a change at the break.

Martin Keown
BBC Sport

"Sergey Ignashevich can hit them, but you expect the goalkeeper to save that. He made a bit of a meal of it.

"Then the ball is nicely worked by Alexander Kokorin, and Yuri Zhirkov is much better than that. He is caught in two minds and ends up kicking into the ground as he shoots on goal."

Close! It is getting better.

South Korean skipper Koo Ja-cheol hits a shot from 20 yards which takes a deflection which wrong-foots the Russian goalkeeper Igor Akinfeev, he is a spectator but the ball skids past the post...

Image source, Getty Images

Bang! What an effort!

Out of nowhere Russian centre-half Sergey Ignashevich drives in a free-kick from 40 yards, it moves in the air, a really cracking strike and Jung Sung-ryong makes a stumbling save.

That was a highlight. Yuri Zhirkov then thumps a drive wide on the run.

Is this one coming to life?

Former Wales striker John Hartson
BBC Radio 5 live

"It will be Belgium plus AN Other to go through this group. I know Belgium ambled to a win against Algeria but I would think it is one from three to join them."

South Korea are packing the centre of midfield, working hard to close down Russia and not give them any room at all. It's a very slow tempo in there, with the mega heat not helping matters.

Ming on text: - I think so far referees are off to a bad start. Just like some of the bigger so called teams. Can't see them getting much more wrong. And to be fair diving is all Fred has done for Brazil thus far in the tournament. My World Cup winners are Spain. Netherlands be very close.

Martin Keown
BBC Sport

"It's up to Russia to take the game to South Korea, who are quite happy just to sit back in. But everything is very safe and simple. It's so slow, there is no tempo to the game. It needs to be played much quicker."

You've not missed anything. Nothing happening in Cuiaba.

It's not often you feel sorry for Pele.

But the footballing legend was glued to the radio as heavy traffic in Sao Paulo meant he missed the first half of his country's goalless draw Tuesday with Mexico earlier on.

"I suffered a lot - I listened to the first half in the car. There was so much traffic, the car just wasn't moving," said the 73-year-old.

"It was the second time I heard a Brazil World Cup match on the radio, in 1950 and today."

Former Wales striker John Hartson
BBC Radio 5 live

"Russia have always been strong but they have not been world beaters in football. They are very good at many sports but, with all the money Russia provide, they have not really turned up and done very well in football."

Martin Keown
BBC Sport

"I can see what Russia are trying to do in midfield with their triangles but when it goes into Alexander Kokorin he is not the quickest and it's asking a lot for him to hold the ball up and wait for his team-mates to come and support.

"Some of the crowd are reacting to the pace of the game. Certainly South Korea are in no rush when in possession. I wonder how much this late start affects teams, sitting around in their hotel rooms. It hasn't helped these two."

Image source, facebook

Players have been giving unprecedented behind the scenes access at a World Cup to the public at this event through social media. A photo in doping control? Why not?

Here is a picture Mexico substitute Marco Fabian has just put on Facebook, external with Neymar. All friends after the 0-0 draw it seems.

Tony:, external South Korea look pretty tidy on the ball, with a few quality touches. I can see them getting a result out of this.

Adam:, external South Korea look very composed on the ball with good technical ability, need to find a way to score against the static Russians.

I'm in real danger of doing a 10-hour shift without a goal here.

Russia with 54% of possession so far, but we've not had a solitary effort on goal yet.

Daryl on text: Dzagoev was absolutely electric and ended up joint top scorer at the last Euros- and left on the bench?

tommyt: No one has even mentioned Russia in the build up to the tournament but they have lots of experienced players and have a very winnable group!?

Image source, Getty Images

Apparently Fabio Capello is the highest-paid coach at the World Cup, raking in £6.7m a year in charge of Russia.

It's also his 68th birthday on Wednesday. So you can open a can for him in 45 minutes if you are in the UK, but he will have to wait a few hours yet over in Brazil...

Former Wales striker John Hartson
BBC Radio 5 live

"There was nothing in that from Son. I'm not sure it was worthy of a yellow card when you see some of the tackles flying in during the World Cup."