Barcelona midfielder Thiago Alcantara insisted he would not be affected by his Copa del Rey error as the Catalan club looked to return to winning ways in the Primera Division clash with Real Sociedad at the Anoeta.
Tito Vilanova's team, who have dropped only two points in 19 games this season - in October's 2-2 Clasico draw against Real Madrid - were held to a 2-2 result by Malaga in the first leg of their Copa quarter-final on Wednesday.
Thiago's sloppiness allowed the visitors to take a shock early lead at the Nou Camp, but the 21-year-old has not lost any confidence in his game.
``We've got a well-established style of play but sometimes you can make a mistake in a question of seconds, and it was my turn,'' he said. ``You just have to forget it and move on. What hurts most is the work and sacrifice put in by your team-mates.
``This small mistake is annoying, but my progress and hunger for the game are the same. Confidence is growing day by day and progress is good.''
Alexis Sanchez also came in for criticism for two first-half misses, but Vilanova was quick to defend the 24-year-old Chile forward.
``Just like with Thiago, we need to help him,'' the Barca coach said on www.fcbarcelona.cat. ``He's a young player that goes all out.
``If he missed those chances, it's because he worked hard to create them. We can forgive him his missed chances, but we can't forgive him if he doesn't try, and he tries.
``He's one of us and if we don't help him it will be more difficult for him.''
Barca, who were rocked last night when Victor Valdes' agents confirmed the goalkeeper did not plan to renew his contract when it expires at the end of the 2013/14 campaign, will make a late decision on the fitness of Spain striker David Villa (thigh).
Sociedad coach Philippe Montanier acknowledged at his pre-match press conference this morning that Barca looked unstoppable, but promised his ninth-placed side would give their all.
``There is no recipe to stop this team - maybe the best ever,'' he said. ``They have more possession than all their rivals, but we have shown we can achieve good results without (having much of) the ball.
``We're highly motivated, but know it will be a difficult challenge.''
He continued: ``They have had an incredible first half of the season, with an almost perfect record at home. But every game is different and we will come out determined to try to become the first to beat them this season.
``(Their weaknesses) are not easy to find, but they do have some so we will try to force mistakes and capitalise.''