Barcelona 0 Manchester United 0: Cristiano Ronaldo missed a third-minute penalty as Manchester United and Barcelona drew a blank in their Champions League semi-final first leg.
The Portuguese winger, who already has 38 goals to his name this season, was presented with an ideal chance to silence the Nou Camp crowd early on following Gabriel Milito's handball, but fired wide from 12 yards.
United were second best for much of the game thereafter, though the nearest the hosts came to breaking the deadlock was a Samuel Eto'o slice into the sidenetting and two late Thierry Henry efforts.
The result leaves next week's second leg at Old Trafford wide open, with both sides entitled to feel relatively happy with the scoreline.
Ronaldo with 38 goals to his credit this season was left frustrated when Milito handled inside the penalty area in the second minute of the game. Swiss referee Massimo Busacca had no hesitation in pointing to the spot, waving away protests from Barcelona.
Ronaldo stepped up to take the penalty kick - only to see his effort hit the stanchion. The winger was left holding his head in his hands after missing a golden opportunity of giving United a precious away goal.
Alex Ferguson's side struggled to find their rhythm in the first-half, with Barcelona having the majority of possession. Lionel Messi picked out Samuel Eto'o in the 13th minute only for Paul Scholes to make a vital interception.
Ronaldo felt he should have had another penalty in the 30th minute when he was bundled over by Marquez after Xavi had carelessly lost possession. However referee Busacca would have none of it and allowed play to continue, leaving the United winger frustrated.
Barca were dictating the tempo at this stage and Eto'o rattled in a shot after 34 minutes but Wes Brown made a vital block. Brown was partnering Rio Ferdinand in the heart of defence in the absence of Vidic with the recalled Owen Hargreaves operating at right back.
Barcelona were quickly on the offensive at the start of the second half and Messi saw his effort blocked in the 47th minute, before van der Sar did well to tip over Gianluca Zambrotta's long-range shot.
Eto'o skipped away from Ferdinand and tried to pick out Messi - but Michael Carrick was perfectly positioned and made the clearance.
Eto'o got clear in the 52nd minute but sent his effort into the side-netting, before Deco tested van der Sar three minutes later with a low drive.
The Dutch goalkeeper was equal to Xavi's effort from 20 yards before Messi - who had only recently returned from injury - was replaced by Bojan Krkic in the 63rd minute.
United were finding it difficult to set up any attacks, leaving Ronaldo, Rooney and Carlos Tevez fairly isolated up front.
Former Arsenal favourite Thierry Henry was called into the action after 77 minutes with Deco coming off. Henry quickly picked up the pace of the game and rattled in a shot after 83 minutes that Van der Sar beat away.
The United goalkeeper then got his body behind a Henry free-kick as United held out for a creditable draw.
Barcelona: Valdes, Zambrotta, Marquez, Milito, Abidal, Xavi, Toure Yaya, Deco (Henry 77), Messi (Bojan 62), Eto'o, Iniesta.
Man Utd: Van der Sar, Hargreaves, Ferdinand, Brown, Evra, Ronaldo, Carrick, Scholes, Park, Rooney (Nani 76), Tevez (Giggs 85).
Att: 98,000
Ref: Massimo Busacca (Switzerland).
