Barcelona v Arsenal in the Champions League

After last week's 2-2 draw at the Emirates, Arsenal arrive in Barcelona needing to score at least once to sustain their Champions League ambitions. Arsenal's chances of qualification had, it seemed, been shattered as Barcelona rampaged to a 2-0 lead in the first leg thanks to a brace from Zlatan Ibrahimovic. But goals from Theo Walcott and Cesc Fábregas have given them cause for optimism tonight Photograph: Carl Recine/Action Images Photograph: Carl Recine/guardian.co.uk Ground staff prepare the pitch for the game, spraying Barcelona's insignia onto the turf Photograph: Carl Recine/Action Images Photograph: Carl Recine/guardian.co.uk A fan looks from a dizzying height over the 98,000 seater stadium. In the seating beneath him are the words 'Mes que un club' ('More than a club') symbolising Barca's significance to the Catalan population Photograph: Nick Potts/PA Photograph: Nick Potts/guardian.co.uk Arsène Wenger has opted to leave Sol Campbell out of Arsenal's defence, favouring Mikael Silvestre instead Photograph: Carl Recine/Action Images Photograph: Carl Recine/guardian.co.uk Barcelona make the livelier start of the two teams ... Here, Xavi goes down under a challenge from Abou Diaby Photograph: Carl Recine/Action Images Photograph: Carl Recine/guardian.co.uk Again, Xavi is in the thick of it, fending off Arsenal's Samir Nasri Photograph: Adam Davy/EMPICS Sport Photograph: Adam Davy/guardian.co.uk With 19 minutes gone, Arsenal make a swift counter-attack and Walcott feeds Niklas Bendtner on the edge of the box ... Bendtner's initial effort is smothered by the Barcelona goalkeeper Victor Valdes, but the Arsenal player reacts quickest to poke home the rebound Photograph: Lluis Gene/AFP/Getty Images Photograph: Lluis Gene/guardian.co.uk Bendtner looks ecstatic ... it wasn't the easiest of chances as Walcott played his pass behind Bendtner, but the Dane has scrambled it home and Arsenal now have the edge in this tie, leading 3-2 on aggregate Photograph: Lluis Gene/AFP/Getty Images Photograph: Lluis Gene/guardian.co.uk Devastation for Arsenal ... only two minutes later Lionel Messi fires in a stunning equaliser. Having seized a loose ball on the edge of the penalty area, he lashed it into the top corner, leaving Arsenal's goalkeeper Manuel Almunia helpless ... Photograph: Darren Staples/Reuters Photograph: Darren Staples/guardian.co.uk Messi celebrates his strike; Barcelona now have the aggregate advantage again courtesy of their two away goals Photograph: Adrian Dennis/AFP/Getty Images Photograph: Adrian Dennis/guardian.co.uk It turns out to be the first of three first-half goals for the Argentinian as Barcelona run amok. Here, he scores his second goal from closer range after starting the attack with a clever through-ball Photograph: Carl Recine/Action Images Photograph: Carl Recine/guardian.co.uk His third is simply majestic - presented with a one-on-one opportunity against Almunia, he clips an audacious lob over the keeper and into the net Photograph: Lluis Gene/AFP/Getty Images Photograph: Lluis Gene/guardian.co.uk It's so good it's worth a second look Photograph: Adrian Dennis/AFP/Getty Images Photograph: Adrian Dennis/guardian.co.uk Former Gunner Thierry Henry is amused, despite being left on the substitutes' bench for the entire match Photograph: Carl Recine/Action Images Photograph: Carl Recine/guardian.co.uk Conversely, his ex-boss Arsene Wenger looks to the skies for inspiration as Arsenal face potential humiliation in the second half Photograph: Adam Davy/EMPICS Sport Photograph: Adam Davy/guardian.co.uk Tomas Rosicky leaps over Raphael Marquez as Arsenal create a few half chances to reduce the deficit, but they fail to find a breakthrough Photograph: Jasper Juinen/Getty Images Photograph: Jasper Juinen/guardian.co.uk But Barcelona score a fourth goal two minutes from time to cap an awesome display. No points for guessing who the scorer was. Another dazzling run leads to another fine goal for Messi. Almunia had blocked Messi's first effort, but was instantly beaten with a nutmeg as the 22-year-old striker snapped up the rebound Photograph: Jasper Juinen/Getty Images Photograph: Jasper Juinen/guardian.co.uk Arsenal's players looks worn out. They've lost 4-1 on the night, 6-3 on aggregate, meaning it's Barcelona who'll go through to play Internazionale in the semi-finals Photograph: Darren Staples/Reuters Photograph: Darren Staples/guardian.co.uk