Welcome to live coverage of Barcelona's home clash with Zaragoza, which begins at 19:00 UK time.

Barca move 10 points clear while Zaragoza could theoretically end the weekend in the relegation zone.

And that is the last act of the evening - Barca win 1-0.

Messi with a supreme free-kick, dinked over the wall and an inch wide of the post! I thought it had gone in!

He picks himself up - surely he should have been preserved in these latter changes?

Yellow card for Italian Lanzaro as he absolutely hammers Messi close to the penalty area. A second goal looked on there.

Three minutes to be added on.

Villa flagged offside from a Messi ball through and takes exception to away defender Maurizio Lanzaro as he puts his arm round him.

A long counter-attacking ball, diagonal from right to left, almost allows Sinama-Pongolle to touch past Valdes with Pique struggling to get back - but Valdes just gets there first.

Barca change: Andres Iniesta on for Pedro to an ovation.

Barcelona keep the ball.

Audible nerves in the home crowd despite the apparent absence of danger. It only takes one chance.

Uche dinks a ball down the middle, straight to Valdes. One or two signs that they will come out and look for an equaliser.

N'Daw handles as Xavi tries to juggle the ball into a more malleable position.

Zaragoza captain Carlos Diogo, formerly of Madrid, fouls Keita in the middle of the park and is lucky to escape a booking.

Real Madrid forward Cristiano Ronaldo will be out of action for 10-15 days after he injured a leg muscle in their 7-0 win over Malaga.

It is wasted. Pep looks worried on the touchline as he scratches his beard.

No sign of that at present, as Barca win their 13th corner to the away team's two.

Old hand Javier Aguirre on the edge of his technical area, encouraging his team. And perhaps asking them to attack a little more...?

Barca change: Eric Abidal on for Maxwell. Guardiola does not dare to give Real Madrid any leeway in the title race, despite their dominant position. Or you could say he doesn't have trust in his reserve players to finish the job...

Messi shoots on the volley as he falls and the ball bounces just over the bar.