The second of these semi-final openers will have to be extraordinary to match the drama witnessed on Tuesday evening, when Barcelona and Atletico played out a thrilling 4-4 draw. Real Madrid head into this game having corrected a recent domestic slump with Sunday’s 2-0 home win over Girona, but are likely to face a stern test against a Sociedad team in fine form under Imanol Alguacil – especially in front of their own fans at Anoeta, having brushed aside Leganes at the weekend.