22 February 2012
Manchester City – FC Porto
Referee: Wolfgang Stark (GER, photo)
Assistant Referee 1: Jan-Hendrik Salver (GER)
Assistant Referee 2: Mike Pickel (GER)
Additional AR 1: Florian Meyer (GER)
Additional AR 2: Deniz Aytekin (GER)
Fourth Official: Marco Fritz (GER)
23 February 2012
Valencia – Stoke City
Referee: Markus Strombergsson (SWE)
Assistant Referee 1: Stefan Wittberg (SWE)
Assistant Referee 2: Mathias Klasenius (SWE)
Additional AR 1: Martin Hansson (SWE)
Additional AR 2: Tobias Mattsson (SWE)
Fourth Official: Johan Hamlin (SWE)
Athletic – Lokomotiv Moskow
Referee: Pawel Gil (POL)
Assistant Referee 1: Piotr Sadczuk (POL)
Assistant Referee 2: Marcin Borkowski (POL)
Additional AR 1: Hubert Siejewicz (POL)
Additional AR 2: Szymon Marciniak (POL)
Fourth Official: Robert Malek (POL)
Twente – Steaua Bucuresti
Referee: Robert Schorgenhofer (AUT)
Assistant Referee 1: Alain Hoxha (AUT)
Assistant Referee 2: Armin Eder (AUT)
Additional AR 1: Rene Eisner (AUT)
Additional AR 2: Thomas Gangl (AUT)
Fourth Official: Alexander Harkam (AUT)
PAOK – Udinese
Referee: Tom Harald Hagen (NOR)
Assistant Referee 1: Kim Haglund (NOR)
Assistant Referee 2: Frank Andas (NOR)
Additional AR 1: Tommy Skjerven (NOR)
Additional AR 2: Espen Berntsen (NOR)
Fourth Official: Dag Vidar Hafsas (NOR)
PSV – Trabzonspor
Referee: Tony Chapron (FRA)
Assistant Referee 1: Eric Dansault (FRA)
Assistant Referee 2: Fredji Harchay (FRA)
Additional AR 1: Clément Turpin (FRA)
Additional AR 2: Said Ennjimi (FRA)
Fourth Official: Alexendre Castro (FRA)
FC Brugge – Hannover SC
Referee: William Collum (SCO)
Assistant Referee 1: Derek Rose (SCO)
Assistant Referee 2: Graham Chambers (SCO)
Additional AR 1: Alan Muir (SCO)
Additional AR 2: Robert Madden (SCO)
Fourth Official: Crawford Allan (SCO)
Standard Liege – Wisla Krakow
Referee: Milorad Mazic (SRB)
Assistant Referee 1: Milovan Ristic (SRB)
Assistant Referee 2: Igor Radojcic (SRB)
Additional AR 1: Milenko Vukadinovic (SRB)
Additional AR 2: Bosko Jovanetic (SRB)
Fourth Official: Vlado Glodjovic (SRB)
Besiktas – Braga
Referee: Istvan Vad (HUN)
Assistant Referee 1: Gabor Eros (HUN)
Assistant Referee 2: Robert Kispal (HUN)
Additional AR 1: Mihaly Fabian (HUN)
Additional AR 2: Tamas Bognar (HUN)
Fourth Official: Sandor Ando-Szabo (HUN)
Manchester United – Ajax Amsterdam
Referee: Damir Skomina (SVN)
Assistant Referee 1: Primoz Arhar (SVN)
Assistant Referee 2: Matej Zunic (SVN)
Additional AR 1: Matej Jug (SVN)
Additional AR 2: Slavko Vincic (SVN)
Fourth Official: Roberto Ponis (SVN)
Sporting – Legia
Referee: Vladislav Bezborodov (RUS)
Assistant Referee 1: Nikolay Golubev (RUS)
Assistant Referee 2: Vyacheslav Semenov (RUS)
Additional AR 1: Vladimir Kazhmenko (RUS)
Additional AR 2: Vitaly Meshkov (RUS)
Fourth Official: Stanislav Sukhina (RUS)
Schalke – Viktoria Plzen
Referee: Alan Kelly (IRL)
Assistant Referee 1: Damien MacGraith (IRL)
Assistant Referee 2: Marc Douglas (IRL)
Additional AR 1: Padraigh Sutton (IRL)
Additional AR 2: Tomas Connolly (IRL)
Fourth Official: Neil Doyle (IRL)
Metalist – Salzburg
Referee: Antony Gautier (FRA)
Assistant Referee 1: Michael Annonier (FRA)
Assistant Referee 2: Frederic Cano (FRA)
Additional AR 1: Fredy Fautrel (FRA)
Additional AR 2: Ruddy Buquet (FRA)
Fourth Official: Herve Piccirillo (FRA)
Olympiacos – Rubin Kazan
Referee: Stefan Johannesson (SWE)
Assistant Referee 1: Fredrik Nilsson (SWE)
Assistant Referee 2: Magnus Sjoblom (SWE)
Additional AR 1: Michael Lerjeus (SWE)
Additional AR 2: Martin Strombergsson (SWE)
Fourth Official: Daniel Stalhammar (SWE)
Anderlecht – AZ Alkmaar
Referee: Pedro Proenca (POR)
Assistant Referee 1: Bertino Miranda (POR)
Assistant Referee 2: Ricardo Santos (POR)
Additional AR 1: Manuel de Sousa (POR)
Additional AR 2: Duarte Gomes (POR)
Fourth Official: Hugo Miguel (POR)
Atletico Madrid – Lazio Roma
Referee: Martin Atkinson (ENG)
Assistant Referee 1: Peter Kirkup (ENG)
Assistant Referee 2: Stephen Child (ENG)
Additional AR 1: Mark Clattenburg (ENG)
Additional AR 2: Michael Oliver (ENG)
Fourth Official: Andre Marriner (ENG)