First Leg, 31 July – 1 August 2012
Dynamo Kyiv – Feyenoord
Referee: Andre Marriner (ENG, photo)
Assistant Referee 1: Simon Long (ENG)
Assistant Referee 2: Peter Bankes (ENG)
Fourth Official: Anthony Taylor (ENG)
Motherwell – Panathinaikos
Referee: Pol van Boekel (NED)
Assistant Referee 1: Berry Simons (NED)
Assistant Referee 2: Nicky Siebert (NED)
Fourth Official: Tom Van Sichem (NED)
Bate – Debrecen
Referee: Sascha Kever (SUI)
Assistant Referee 1: Raffael Zeder (SUI)
Assistant Referee 2: Stefan Buhlmann (SUI)
Fourth Official: Daniel Wermelinger (SUI)
Kiryat Shmona – Neftci
Referee: Alan Kelly (IRL)
Assistant Referee 1: Damien MacGraith (IRL)
Assistant Referee 2: Marc Douglas (IRL)
Fourth Official: Graham Kelly (IRL)
Sheriff – Dinamo Zagreb
Referee: Lee Probert (ENG)
Assistant Referee 1: Stuart Burt (ENG)
Assistant Referee 2: Charles Breakspear (ENG)
Fourth Official: John Moss (ENG)
Molde – Basel
Referee: Fredy Fautrel (FRA)
Assistant Referee 1: Cyril Gringore (FRA)
Assistant Referee 2: Stephan Luzi (FRA)
Fourth Official: Nicolas Rainville (FRA)
AEL – Partizan
Referee: Stanislav Todorov (BUL)
Assistant Referee 1: Veselin Dobriyanov (BUL)
Assistant Referee 2: Ivo Kolev (BUL)
Fourth Official: Alexander Kostadinov (BUL)
Kobenhavn – FC Brugge
Referee: Ovidiu Hategan (ROU)
Assistant Referee 1: Zoltan Szekely (ROU)
Assistant Referee 2: Octavian Sovre (ROU)
Fourth Official: Sebastian Coltescu (ROU)
Maribor – Dudelange
Referee: Aleksei Nikolaev (RUS)
Assistant Referee 1: Oleg Tselovalnikov (RUS)
Assistant Referee 2: Vitali Drozdov (RUS)
Fourth Official: Vladimir Kazmenko (RUS)
Anderlecht – Ekranas
Referee: Kristinn Jakobsson (ISL)
Assistant Referee 1: Johann Gudmundsson (ISL)
Assistant Referee 2: Gunnar Gunnarsson (ISL)
Fourth Official: Thoroddur Hjaltalin (ISL)
Slask – Helsingborg
Referee: Ivan Bebek (CRO)
Assistant Referee 1: Tomislav Petrovic (CRO)
Assistant Referee 2: Miro Grgic (CRO)
Fourth Official: Goran Gabrilo (CRO)
CFR Cluj – Liberec
Referee: Bulent Yilduirim (TUR)
Assistant Referee 1: Cem Satman (TUR)
Assistant Referee 2: Erdinc Sezertam (TUR)
Dynamo Kyiv – Feyenoord
Referee: Andre Marriner (ENG, photo)
Assistant Referee 1: Simon Long (ENG)
Assistant Referee 2: Peter Bankes (ENG)
Fourth Official: Anthony Taylor (ENG)
Motherwell – Panathinaikos
Referee: Pol van Boekel (NED)
Assistant Referee 1: Berry Simons (NED)
Assistant Referee 2: Nicky Siebert (NED)
Fourth Official: Tom Van Sichem (NED)
Bate – Debrecen
Referee: Sascha Kever (SUI)
Assistant Referee 1: Raffael Zeder (SUI)
Assistant Referee 2: Stefan Buhlmann (SUI)
Fourth Official: Daniel Wermelinger (SUI)
Kiryat Shmona – Neftci
Referee: Alan Kelly (IRL)
Assistant Referee 1: Damien MacGraith (IRL)
Assistant Referee 2: Marc Douglas (IRL)
Fourth Official: Graham Kelly (IRL)
Sheriff – Dinamo Zagreb
Referee: Lee Probert (ENG)
Assistant Referee 1: Stuart Burt (ENG)
Assistant Referee 2: Charles Breakspear (ENG)
Fourth Official: John Moss (ENG)
Molde – Basel
Referee: Fredy Fautrel (FRA)
Assistant Referee 1: Cyril Gringore (FRA)
Assistant Referee 2: Stephan Luzi (FRA)
Fourth Official: Nicolas Rainville (FRA)
AEL – Partizan
Referee: Stanislav Todorov (BUL)
Assistant Referee 1: Veselin Dobriyanov (BUL)
Assistant Referee 2: Ivo Kolev (BUL)
Fourth Official: Alexander Kostadinov (BUL)
Kobenhavn – FC Brugge
Referee: Ovidiu Hategan (ROU)
Assistant Referee 1: Zoltan Szekely (ROU)
Assistant Referee 2: Octavian Sovre (ROU)
Fourth Official: Sebastian Coltescu (ROU)
Maribor – Dudelange
Referee: Aleksei Nikolaev (RUS)
Assistant Referee 1: Oleg Tselovalnikov (RUS)
Assistant Referee 2: Vitali Drozdov (RUS)
Fourth Official: Vladimir Kazmenko (RUS)
Anderlecht – Ekranas
Referee: Kristinn Jakobsson (ISL)
Assistant Referee 1: Johann Gudmundsson (ISL)
Assistant Referee 2: Gunnar Gunnarsson (ISL)
Fourth Official: Thoroddur Hjaltalin (ISL)
Slask – Helsingborg
Referee: Ivan Bebek (CRO)
Assistant Referee 1: Tomislav Petrovic (CRO)
Assistant Referee 2: Miro Grgic (CRO)
Fourth Official: Goran Gabrilo (CRO)
CFR Cluj – Liberec
Referee: Bulent Yilduirim (TUR)
Assistant Referee 1: Cem Satman (TUR)
Assistant Referee 2: Erdinc Sezertam (TUR)
Fourth Official: Baris Simsek (TUR)
Celtic – HJK
Referee: Miroslav Zelinka (CZE)
Assistant Referee 1: Ondrej Pelikan ( CZE)
Assistant Referee 2: Emanuel Marek (CZE)
Fourth Official: Radek Matejek (CZE)
Fenerbahce – Vaslui
Referee: Antonio Mateu Lahoz (ESP)
Assistant Referee 1: Pau Cebrian Devis (ESP)
Assistant Referee 2: Jon Nunez Fernandez (ESP)
Fourth Official: Jose Gonzalez Gonzalez (ESP)
Celtic – HJK
Referee: Miroslav Zelinka (CZE)
Assistant Referee 1: Ondrej Pelikan ( CZE)
Assistant Referee 2: Emanuel Marek (CZE)
Fourth Official: Radek Matejek (CZE)
Fenerbahce – Vaslui
Referee: Antonio Mateu Lahoz (ESP)
Assistant Referee 1: Pau Cebrian Devis (ESP)
Assistant Referee 2: Jon Nunez Fernandez (ESP)
Fourth Official: Jose Gonzalez Gonzalez (ESP)