The sight of a Champions League knockout stage without Barcelona is an unfamiliar one, with the Catalan club often a lock for the quarter-finals as a minimum.
However, as we watch the competition tick on without Xavi's side, it's hard not to cast our minds back to their surprise early elimination some 15 years ago.
Back then, Barca were the reigning European champions after late goals from Samuel Eto'o and Juliano Belletti saw them break Arsenal's resistance in the 2006 final.
