a packed news conference. "We have done all we could. There has never been a semi-final where so much has been done to reach the final. Not even the last three we have reached since we play together. Never ever ever like we did in this one but it was not enough, and that is what counts. We must have done something wrong, now we must analyse what that was and try to make it better in the future," he said. World Player of the Year Lionel Messi, denied by a post late on, crashed his spot kick against the crossbar with Petr Cech beaten and has now gone eight games without scoring against Chelsea - by far his worst record against any club in Europe. But Guardiola defended his star player against critics. "I have total admiration for him. For him daring to do things, for his braveness, for his good condition. For going to Pamplona and wanting to play under 10 degrees and try to win the game. He is an example for all of us for his competitiveness and how he takes us all with him in his enthusiasm and us helping him to be himself," he said. Guardiola has led Barca to 13 titles since taking over in 2008, including Champions League triumphs in 2009 and 2011, but Tuesday's failure will inevitably lead to further speculation about the former midfielder's future. He has yet to agree an extension to his contract beyond the end of this