Real Madrid have started on the offensive and they're keeping up the heavy pressure. From a free kick, Sergio Ramos completely misses a free header, but the ball runs through to Gonzalo Higuain, who's already been guilty of a huge miss this game. The Argentinian gets his shot on target this time, but Jose Manuel Pinto manages to block the ball off with a superb save. The whole play is pulled back for offside, which is wasn't - if Pinto hadn't stopped that Madrid would be furious about being denied a goal for no reason at all.
Anyway, Barcelona really haven't managed to settle into any sort of rhythm, and their guests are pulling them all over the place. They'll need to settle down, quickly, or they'll see their aggregate lead evaporate. They're up 2-1 overall, but it's still 0-0 here at the Camp Nou - although the hosts do have an interesting looking free kick after Lionel Messi was fouled by Kaka.
For more on the two teams, check out Real Madrid blog Managing Madrid and FC Barcelona blog Barca Blaugranes. We have live coverage of the match in our Real Madrid vs. Barcelona, 2012 El Clasico StoryStream.