UEFA Europa League – Semi-finals (Second Leg)

26 April 2012
Valencia CF – Atletico Madrid

Referee: Damir Skomina (SVN, photo)
Assistant Referee 1: Primoz Arhar (SVN)
Assistant Referee 2: Marko Stancin (SVN)
Additional AR 1: Matej Jug (SVN)
Additional AR 2: Slavko Vincic (SVN)
Fourth Official: Mitja Zganec (SVN)

Athletic Bilbao – Sporting Lisbon
Referee: Martin Atkinson (ENG)
Assistant Referee 1: Michael Mullarkey (ENG)
Assistant Referee 2: Stephen Child (ENG)
Additional AR 1: Mark Clattenburg (ENG)
Additional AR 2: Michael Jones (ENG)
Fourth Official: Michael Dean (ENG)