Arsenal have the Premier League left in their sights but it will be interesting to see how they get on after this thumping loss.

Lionel Messi hits all four and his stock continues to rise. He is unplayable at the minute as Arsenal found out this evening.

Eduardo heads over from the flag kick.

Eboue's run brings a corner. Can Arsenal grab a consolation?

An additional three minutes for Arsenal to endure. They have been comprehensively battered this evening by a far superior side.

Maxwell storms through and almost sneaks his effort inside Almunia's near post. But the keeper reacts just in time to stop the Spaniards from extending their lead.

The Barca fans are in full voice now as they hold the ball majestically.

Walcott smashes the ball against the frame of the goal but he is offside.

Sagna just does enough to stop Messi going one-on-one with Almunia.

Fabulous turn from Pedro on the edge of the box fools Diaby, Eboue and Sagna but he puts his shot wide. Great play from the wide man.

The corner is a poor one and Arsenal break. But yet again fine defending and pressure from Barca halts any danger.

Alves' cross is deflected for a corner. Can the hosts add the gloss to a fine performance with a fourth here?

Clichy's bursts clear but fires an effort high and wide.

Barca look content to see this one out.

Bendtner heads Clichy's fabulous cross onto the post but he is flagged offside.

A quick free-kick sees Pedro clear on goal but his chip drifts just wide.

Rosicky is picked out on the edge of the area but the midfielder shoots over. These half chances have to be taken if they are to force the issue.

There is no real intensity from either side at the moment. Arsenal are doing very little to look like getting back into this one.

A promising Arsenal move breaks down as Clichy's wild effort from distance sails wide.

Big chance for Arsenal as the ball breaks to Bendtner. However, he is slow to react and Milito makes a great last-ditch challenge.

Clichy provides a meaningful run up the left but he is tackled and the ball runs away for a throw.

The Barca faithful are whistling as Arsenal keep hold of the ball. The visitors are doing nothing to hurt their opponents though.

Has Guardiola now got one eye on the weeked showdown with La Liga rivals Real Madrid?

Pedro breaks on the right but can't find Messi.

Fine play from Messi, Alves and Bojan ends with the latter shooting wide from the edge of the area.

A break in proceedings here as Abidal is grounded. Could be his troublesome thigh problem.

Fantastic entertainment from the Champions League holders.

Xavi's dart through the centre is thwarted by Vermaelen.

Alves breaks up the right flank but his cross doesn't find Messi or Bojan and Arsenal survive.

Messi is a matter of inches from grabbing his fourth as Pedro's telling centre is just too far ahead of his despairing slide.

Good pressure from Barca's midfield men. They are swamping the centre of the park, with or without the ball.

No changes for Arsenal as they look to get back into the contest.

Messi's clever flick almsot plays in Bojan but the Arsenal defence holds out.

The fourth official indicates there will be a minimum of one additional minute at the end of this absorbing first-half.

For once Messi's control lets him down as he homes in on goal. His heavy touch allows Almunia to dive out at his feet to claim the ball.

Marquez and Milito are looking assured at the heart of Barcelona's defence, unfortunately for Arsenal.

Plenty of keep ball again from Barca. Another goal would kill off Arsenal now.

Alves' excellent cross is cleared in the nick of time by Vermaelen as Bojan was ready to pounce.

Nasri brings down Xavi as Barca turn the screw.

Bendtner is in the clear but the linesman's flag saves Barca. Close call.

Messi teases Silvestre as he faces the French defender one-on-one. But the front man fires his shot into the side netting, much to the visitors' relief.

Alves hits the free-kick from distance but it is gathered by Almunia.

Referee Wolfgang Stark blows up against Busquets as he brings down Walcott. Again, that should have been a caution.

Lots of Barca possession but it's not causing Arsenal any problems at the moment.

Pedro breaks with menace but his cross is poor, much to the frustration of Barca's troops who bombed forward.

The game has entered a slight lull after an explosive few minutes. Arsenal have re-grouped after that setback and look confident on the ball.

Gael Clichy's centre is deflected behind off Alves. The corner is flicked on by Vermaelen but the attack comes to nothing.

Thomas Vermaelen is penalised for a challenge on Bojan. Arsenal manage to clear the ball to safety.

Poor play from Diaby. The towering midfielder should have released Walcott but he delayed his pass, enabling Barca to clear.

Denilson is lucky to escape a booking as he brings down Busquets.

Nasri's back into the action just as Bacary Sagna gives away a free-kick on the left-wing.

That challenge has hurt Nasri and the diminutive midfielder is one the ground. Arsene Wenger could do without any further injury blows.

Crunching tackle from Milito on Samir Nasri stirs the crowd.

Fine break from Messi and Dani Alves sees an attacking move unfold but the Gunners clear.

Messi picks up a loose ball and his curling left-footed effort goes narrowly over the bar. Great effort.

Bojan's clever pass finds Pedro Pedrito but his weak effort from the edge of the box is screwed wide.

Much better from Arsenal. They are putting pressure on the ball and it is forcing Barca's defence into mistakes.

The instrumental Xavi is playing very deep in the opening minutes here and he is clattered by Abou Diaby. That hurt the Spain international.

The corner is cleared and a free-kick is awarded to the Gunners as Walcott is tripped.

Messi's fizzing effort is tipped wide for a corner from Manuel Almunia. Promising start from the hosts.

Xavi's cheeky back-heel goes wide from a left-wing centre.

A quieter start in comparison to last week's meeting. Barca are keeping the ball well and it's been a sedate opening.