Atletico's defence is holding up well to what is being thrown at them...which is not too much. Six shots so far in this game - four by Atletico although Barca continue to dominate possession.

Two quick yellow cards for Atletico. Diego Godin gets into the book for a strong challenge on Luis Suarez before Gabi is also cautioned for a cynical tackle on Ivan Rakitic. The visitors are getting stuck in.

Lionel Messi wants the referee to produce a yellow card after being hauled down by Filipe Luis but the official waves play on. Jeers ring out at the Nou Camp. There's an air of frustration sweeping around the famous ground. This has been a slow start by the hosts.

Image source, Reuters

Which club would suit Diego Simeone best and why?

Deji: Arsenal - suits our George Graham defensive displays and would be useful once Arsene Wenger leaves.

Bigrabsays: Why go to the Premier League when he is at a much better team, competitive in a better league?

Priyan: West Brom - the South American Tony Pulis.

Another shot from Atletico...and it's a very tidy attempt. Augusto Fernandez finds space just outside the area, but his low shot is just wide.

Barca have enjoyed 70% possession in the opening 20 minutes but they have been unable to do little with it. Lionel Messi, Neymar and Luis Suarez have been unable to weave their magic so far as Atletico soak up another spell of home pressure. Only two shots in this game - both to Atletico.

Wale Ibraheem: One thing Atletico can exploit today is the leaking defence of Barca, they've done that to a devastating effect. Game on.

First serious chance for the hosts but Gerard Pique's through ball for Neymar is too strong. It is worth noting at this stage that Atletico have not conceded in their previous five La Liga games. Barca have their work cut out.

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Groans from the home crowd as Atletico continue to prod and probe at the home defence. Barca look unusually out of sorts.

What a start by Atletico and it is nothing more than Diego Simeone's side deserve. Koke takes advantage of some sloppy defensive play to slam the ball past Claudio Bravo from 10 yards after the home defence fail to deal with a deep cross.

A packed Nou Camp has fallen silent.

Barcelona have enjoyed 68% possession in the opening 10 minutes but Atletico have had the best chance as well as two early corners.

More replays of Bravo's save. That was an excellent finger-tip stop. Atletico playing with plenty of confidence at a ground where they have not won for 10 years.

Atletico come out all guns blazing. Only a superb full stretch save by Claudio Bravo denies Saul Niguez from outside the area. Barca on the back foot in the early exchanges.

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It's a very pleasant 59 Fahrenheit in Barcelona this afternoon. The sun is shining and the first-versus-second game in La Liga is under way in front of an expectant home crowd at the Nou Camp.

This is the fifth meeting between Luis Enrique and Diego Simeone, the Barcelona boss winning all five.

Which club would suit Diego Simeone best and why?

AJ Vergette: Simeone to Man Utd. Will get them working damn hard, bring them down to earth. Shrewd signings and astute tactics.

Pacific Soul: Chelsea because he would make them more stubborn in defence.

Nathan Sherratt: Newcastle because their current manager is average.

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There's a familiar face missing from Atletico Madrid's team. Former Liverpool and Chelsea striker Fernando Torres is out with ankle injury and faces an uncertain future, external at his boyhood club.

However, Torres remains a popular figure with Atletico fans and his name was chanted during the 3-2 Copa del Rey defeat by Celta Vigo on Wednesday.

"There is no division between Simeone and Torres for Atletico fans. They love us both unconditionally," said Atletico boss Diego Simeone.

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Barcelona boss Luis Enrique has played down the significance of Atletico Madrid's visit, saying it is not 'definitive'.

Leaders Barca will move three points clear of Atletico with one game in hand if they make it eight wins in a row. However, Enrique says it is too early in the season to talk about title-deciding games.

"Regardless of what happens, it'll still be tight at the top," added the former Real Madrid player.