Bar an unfortunate/hilarious late miss from Lionel Messi, that couldn't have gone better for Barcelona. A dominant away performance from them leaves them in control of this tie with Luis Suarez scoring twice on the night.
Manuel Pellegrini's formation in the first half was woefully ineffective, and while they rallied in the second, a red card to Gael Clichy saw Barcelona end the tie as it started; in utter control.
Manchester City 1-2 Barcelona
Hart dives to his left and bats the ball back out! It bounces straight back to Messi who tries to nod home the rebound with a stooping header but he sends it woefully wide!
Bony, 30 yards out from his own goal, loses control and Barcelona spring into action, freeing Messi down the inside left of the box. Zabaleta slides in, but can't get near the ball. Clear penalty.
PENALTY - Barcelona
Lionel Messi scoops a wonderful effort into the right hand corner of the net but it won't stand. The Argentine was marginally offside before he took the ball under control.
Into the final minute of the 90; City lose the ball again, allowing Suarez to spring forward before he is hauled down on the half way line. Fernando is booked.
Aguero does brilliantly well to keep hope alive from his side, jinking and powering his way down the left before Adriano slides in to foul and earn himself a yellow card.
As you can imagine, that red card has taken the sting out of City completely. Barcelona are stroking the ball around fairly comfortably once again. Ensuring Barcelona don't grab a third and waiting for something on the break is the order of the day now.
Pedro meanwhile is on for Barcelona, replacing Neymar.
Pellegrini wants to keep City's shape after going down to 10; Sagna comes on for Silva as they attempt to do just that.
Barcelona denied a wonderful third by an even better tackle from Zabaleta! A dazzling passing move down the inside left frees Alba but just as he is about to pull the trigger, the Argentine pokes the ball away with a terrific sliding challenge.
Oh, City. And it was all going so well. Just like last year, Pellegrini's side are down to ten as Clichy is shown a second yellow after a late challenge on Alves. He can't really have any complaints.
RED CARD - Gael Clichy (Manchester City)
City pull one back! It's Fernando who slides a pass in between the two Barcelona centre halves for Silva to chase down. The Spaniard is there first and brilliantly flicks the ball onto Aguero who carries it away from the challenge of Pique before firing past Ter Stegen.
Goal! Manchester City 1-2 Barcelona (Sergio Aguero)
City are all over the place at the back for a moment as Rakitic and Neymar swap passes before the latter overhits one towards the near post. Somehow, Messi plucks the ball out of the air and keeps it in play. He tries to slide on across goal but the chance eventually disappears for good as Iniesta's effort deflects into the arms of Hart.
First change of the game for City as Fernandinho comes onto replace Nasri.
Clichy is booked for a challenge on Rakitic and will miss the second leg at the Nou Camp.
Nick Howson from the Etihad Stadium
Some second half resolve from City and you could argue they should be level. Nasri, Dzeko and Aguero have all gone close amid a dramatically improved City showing.
Barcelona still playing football from another galaxy when they have the ball and Messi and co will keep the defence interested throughout, but City surely have to sacrifice losing this tie tonight in order to have a chance of winning it."
Silva clips it into a cluster of City shirts at the back post and its Demechelis who gets a head to it, but again it's straight at Ter-Stegen.
City again stretch Barcelona again as Dzeko pulls wide, bringing Pique with him before forcing a corner. City clear it, but Iniesta is then penalised for a high boot and City have the free kick 30 yards out from goal.
Aguero comes within inches of pulling one back! Silva starts the attack with an excellent sliding challenge that frees his teammate in the final third. He advances menacingly and with his marker standing off, tries to curl one into the far corner from the edge of the box. Ter Stegan dives desperately across but the ball is veering just wide anyway.
What a miss from Dzeko! From another corner, Kompany nods it on at the near post straight into the forehead of Dzeko who is unmarked dead in the centre of the box. His connection his good, but it's directed straight into the palms of ter-Stegen.