Welcome to coverage from tonight's game. Kick-off is 30 minutes away.

That's the full-time whistle as the referee calls time on an enthralling game.

Barca win a corner. It finds its way to Messi, who snatches at his shot and pulls it wide. He's looked a little out of sorts tonight.

Looks like I was wrong about more goals! It's been quite a game though.

Cuenca is replaced by young Tello.

Now Mathieu goes into the book for dragging down Cuenca.

Good work by Aduriz to keep the ball in play and lift the ball over Pique to win a free-kick. The resulting set-play comes to nothing.

Change for Barca, Dos Santos on for Thiago.

Yellow card shown to Pinto. Not sure what for, possibly time-wasting.

Last change for Valencia. Aduriz is on for Jonas.

Jordi Alba is booked. He was incensed by a decision to give a free-kick against him and made his feelings known.

Lovely one-two between Messi and Dani Alves sees the Barca man go through. His shot beats Diego Alves but comes back off the post.

It's the hosts who are enjoying the greater possession right now, but it's still anyone's game.

Albelda is off for Tino Costa.

Fierce drive by Abidal from an acute angle is turned behind by Alves. From the corner Pique heads over from five yards. Good chance for the visitors.

If this game finishes 1-1, I'll eat my hat. It's so open right now, although there has been little in the way of chances.

Alves is immediatley caught offside.

Interesting change by Barca, with Dani Alves replacing Alexis.

Feghouli replaces Piatti.

Messi takes the penalty...and it's saved by Alves, who dives to his left to palm the ball away!

Penalty to Barcelona! Thiago is fouled by Miguel and the referee has no hestitation in pointing to the spot.