Barca aiming to avoid shock hat-trickpublished at 19:48 Greenwich Mean Time 27 January 2021
Rayo Vallecano v Barcelona (20:00 GMT)
Hola amigos!
Barcelona have so far avoided the fate of their La Liga rivals, namely being knocked out by lower-league opposition.
Real were humiliated by third-tier side Alcoyano in the last 32, while Atletico were dumped out by UE Cornella - another Segunda Division B club - in the second round.
Tonight, Barca go to second-tier side Rayo Vallecano. And the Catalans are hoping they will not be the butt of the jokes later...