Aberdeen have a mountain to climb if they are to stay in this season’s Europa League having lost 2-0 in Spain on Thursday night.
David Zurutuza broke through the SPL side’s resistance in the 53rd minute, before Sergio Canales came off the bench to double the host’s advantage.
Real Sociedad: Zubikarai, Zaldua, Elustondo, Martinez, De la Bella, Pardo (Granero 83), Markel, Zurutuza, Finnbogason, Prieto (Agirretxe 74), Castro (Canales 64).
Subs Not Used: Bardaji, Mikel Gonzalez, Gazta, Hervias.
Aberdeen: Langfield, Logan, Anderson, Reynolds, Jack, Flood, Pawlett (Considine 62), Robson (Low 71), Hayes, McGinn, Rooney (Goodwillie 71).
Subs Not Used: Brown, Taylor, Smith, Murray.