HomeTeamsAthletic Club1927-28Athletic Club - AceroMatchday 4Campeonato RegionalAthletic Club - AceroAthletic Club51Acero15',57' Calero20' Carmelo G49',74' CalvarMadariaga 53' (p.) 06/11 | Date and time to be confirmedLocationSan Mamés , BilboLine-upsAthletic ClubAceroStarting XIVidal, MJuanínGarizurietaArteagaRuizLegarretaLafuente, RCaleroAyarza, JCarmelo GCalvarSubstitutesHead coachLippo HertzkaHomeAthletic ClubStarting XIVidal, MJuanínGarizurietaArteagaRuizLegarretaLafuente, RCaleroAyarza, JCarmelo GCalvarSubstitutesHead coachLippo HertzkaAwayAceroStarting XIIspizuaMadariagaAranaGojenuriMugarraCaleroEnriqueSan Cristóbal IArturoSantibáñezSan Cristóbal IISubstitutesHead coachMatch officialsLujaRefereeUnknown