UEL Semi-finals, Second Leg

5 May 2011

Braga – Benfica
Referee: Martin Atkinson (ENG, photo)
Assistant Referee 1: Michael Mullarkey (ENG)
Assistant Referee 2: Peter Kirkup (ENG)
Additional Assistant Referee 1: Lee Mason (ENG)
Additional Assistant Referee 2: Michael Jones (ENG)
Fourth Official: Andre Marriner (ENG)

Villarreal – Porto
Referee: Gianluca Rocchi (ITA)
Assistant Referee 1: Cristiano Copelli (ITA)
Assistant Referee 2: Elenito di Liberatore (ITA)
Additional Assistant Referee 1: Mauro Bergonzi (ITA)
Additional Assistant Referee 2: Andrea De Marco (ITA)
Fourth Official: Daniele Orsato (ITA)