Champions League: Barcelona v Chelsea - in pictures

It's no wonder this Barcelona supporter is looking pensive before kick-off - with Pep Guardiola having virtually conceded La Liga to Real Madrid at the weekend and Chelsea one goal to the good in this Champions League tie, Barcelona's season could implode tonight Photograph: Adrian Dennis/AFP/Getty Images

Lionel Messi is looking a little nervy too. Maybe he's thinking about the fact that he's never scored against Chelsea Photograph: Alberto Estevez/EPA

The two managers greet one another before kick-off. Can Roberto Di Matteo achieve what the former Chelsea boss José Mourinho achieved at the weekend - beating Barça in their own backyard? Photograph: guardian.co.uk

Chelsea are exposed early on when a beautiful combination from Andrés Iniesta and Messi creates space for the Argentinian who thwacks a shot goalwards but just past the post Photograph: Stefan Wermuth/Reuters

Twelve minutes in and Chelsea's task is made harder when Gary Cahill goes off injured after pulling a muscle Photograph: Albert Gea/Reuters

Chelsea decide to show Barça that they can also be dangerous in attac ... Petr Cech launches a huge kick over the Barça defence for Didier Drogba to chase. Victor Valdés then races off his line to punch the ball away and flattens both Gerard Piqué and Drogba in the process Photograph: Shaun Botterill/Getty Images

Finally, the inevitable happens and Barcelona score, levelling the tie on aggregate. Isaac Cuenca draws Cech from his goal and slides the ball into the six-yard box where Sergio Busquets strokes it into the empty net Photograph: Stefan Wermuth/Reuters

Two minutes later it goes from bad to worse for the Blues when John Terry is shown the red card. It was a staggering piece of stupidity from the Chelsea captain who, for no apparent reason, kneed Alexis Sánchez just outside the area with play going on elsewhere. The referee didn't see it, but his assistant did Photograph: Shaun Botterill/Getty Images

This one is entitled 'John Terry – a study in bewilderment and astonishment' Photograph: Andres Kudacki/AP

In the 44th minute, Iniesta doubles Barcelona's lead with a lovely finish. Messi found a crucial pocket of space 30 yards from goal and, with all of the attention on him, slipped a cute pass to the left for his unmarked team-mate. Game over ... Photograph: Stefan Wermuth/Reuters

Or so everyone thought. During first half injury time Frank Lampard plays in Ramires and the Chelsea striker, who is in yards of space, lifts a glorious chip over Valdés and into the net ... Photograph: Darren Walsh/Chelsea FC via Getty Images

He's got every reason to celebrate as that was an exquisite finish. Though the celebrations must feel bitter sweet as he has already been booked and will miss the final should Chelsea make it through. Half time score 2-1 (2-2 on aggregate - with Chelsea ahead on away goals) Photograph: Darren Walsh/Chelsea FC via Getty Images

Barcelona start the second half as brightly as they started the first. Cesc Fábregas plays a one-two with Messi and races into the area. Drogba is caught napping and Fábregas goes to ground under his challenge. The assistant behind the goal signalled for a penalty. Messi will take it ... Photograph: Shaun Botterill/Getty Images

And he hits it high, too high, and the ball smacks against the bar! Messi still hasn't scored against Chelsea and that is a huge let off for Chelsea Photograph: John Sibley/Action Images

Guardiola looks a desperate as he urges his side forwards to grab the goal which they need to see them through to the final Photograph: Shaun Botterill/Getty Images

Messi is finding it difficult to breach the massed ranks of Chelsea players Photograph: Andres Kudacki/AP

With Barcelona pushing everyone forward, they forget to leave anyone back to mark Fernando Torres. A punt from the box sends him racing clear of the non-existent Barcelona defence. He waits for Valdés to commit himself and just skips round him before rolls the ball into the empty net Photograph: Javier Soriano/AFP/Getty Images

That is pure catharsis for a player who has had a dismal time since joining Chelsea Photograph: John Sibley/Action Images

Jubilant team-mates soon join him in celebration Photograph: Darren Walsh/Chelsea FC via Getty Images

Barça are unable to offer anything in return and just a couple of minutes later, the final whistle goes. The European champions are out and Chelsea are in the Champions League Final! Cue hysteria ... Photograph: Andres Kudacki/AP

Chelsea's goalkeeper Petr Cech looks astonished. He kept Chelsea in the game with a number of important saves, including one late in the game where he got his fingertips to a Messi shot and turned it onto the post Photograph: David Ramos/Getty Images

Messi is a picture of dejection Photograph: Pierre-Philippe Marcou/AFP/Getty Images

Di Matteo thoroughly deserves to be wearing that broad smile. That was a huge performance from his charges to knock out the holders in Barcelona. Can he now guide them one step further to victory in the final? Photograph: Shaun Botterill/Getty Images