Sant Joan Despí (Spain), Mar 11 (EFE).- The mighty F.C. Barcelona who have broken all kinds of records and won competitions for the last several years are looking to win the only honour they haven't checked off their list: to make a comeback in a Champions League knock out game. Assistant manager Jordi Roura spoke Monday, claiming that the key to victory is finding a perfect balance between intensity, pressure, strength and will power as well as not getting ahead of one's self. <br />EFE TV -Madrid- 20:15 GMT.