Could do little for Zaragoza's goal, and was a spectator for large periods during the match.
Reunited alongside regular partner Puyol, and was his usual calm self at the back, dealing with whatever Zaragoza threw his way, and dropping deep on occasion to cover for the veteran.
Excellent on the overlap, especially during the opening exchanges as he set up a pair of opportunities for Messi, one of which was converted for the first goal of the match. A constant threat in the attacking third.
The Blaugrana skipper stepped back into the side after his nasty arm injury against Benfica, allowing Barca to play with two natural centre-backs in defence for the first time in weeks. It showed, as Zaragoza found it hard to create many clear-cut opportunities.
Involved in the attack, and set up Messi's second with a typical overlapping run. His defensive game was solid, as the Zaragoza wide men were unable to really run at him, despite having a few opportunities to do so.
Always involved in the attack, and though he did not come up with a killer blow, his ease in possession and poise on the ball was an asset for his side.
Calm and composed in the middle of the park, doing what he does best - facilitating the players around him with effective and accurate passing. Metronome-like on the night.
Given a run out in his preferred central midfield position, and scored his first goal for his new club with a simple finish from a Messi cut-back. Gave a good account of himself by breaking up a few attacks, though some of his more ambitious passes left a lot to be desired.
Drifted between the Zaragoza midfield and defensive lines to good effect, and always looked to feed his teammates on the run. Had a pair of chances to score himself - a shot from a tight angle that hit the side netting, and a cracking effort that hit the bar after good work to cut inside.
The heart of everything good in the attacking third for the home side. At his deadly best with two goals of high quality - a delightful first touch and finish, and a curler into the corner from the edge of the box. Laid on Song's first Blaugrana goal for good measure. Simply unstoppable.
Rather quiet outing for the former Valencia man, who was overshadowed by the brilliance of Messi and departed yet again before the full-time whistle, having failed to contribute any real telling moments.
Was well-beaten three times by Barca, though two of the goals he conceded came in front of a packed defence, making it hard for him to see the ball.
Worked extremely hard to deny Barca space, but was given the slip once or twice by Iniesta and Messi during moments that could have proved fatal.
Given a touch time at the back as the pressure from Barca was too much to handle at times. Did not always have the quality to keep up.
Beaten for pace by Messi on more than one occasion, and was caught tucked too far towards the goalline on the Argentine's second goal.
Simply schooled by Messi for Barca's first, as the Argentine's first touch was too good, leaving him chasing both ball and man. Recovered otherwise, but that mistake cost his team at a crucial spell.
Did not offer his team much in attack, and all too often, was guilty of letting the game pass him by.
Often left chasing shadows in midfield, and offered little to stop the play of Iniesta, Messi and Xavi in central areas.
Brought his side level for a brief moment with an opportunistic strike from the edge of the box to make it 1-1. Provided some occasional thrust out wide when Zaragoza looked to break.
Put in a good shift in midfield, and never let his concentration dip for one second. A diligent display that probably deserved a better outcome.
Gave his side plenty of positive moments down the right wing as his willingness to get to the byeline, forcing Alba to defend on occasion and give his flank some relief on the defensive side. One such run ended up winning a corner that set the events of their first half goal in motion.
Found a few channels to run towards goal, but too often, the service was lacking. Hard worker, but largely frustrated.