Match Preview: FC Barcelona v Atlético de Madrid | FC Barcelona
Diego Simeone's side always provide a tough test: Atlético came out victorious when the two teams met at the same stage of the competition two years ago but, since the appointment of Luis Enrique, Barça have enjoyed a run of six straight wins against Los Rojiblancos.
Comparing Barça v Atlético in the UEFA Champions League, then and now | FC Barcelona
Whereas Atlético were atop the La Liga table when the two sides last met in the UEFA Champions League, Tuesday's match will kick off with Barça in first place with 76 points, six ahead of the second-place Colchoneros.