Designazioni valide per la prima giornata della fase a gironi di Europa League:
Group A, 14 September 2017, 19:00 CET
Estadio de la Cerámica, Villarreal (ESP)
Villarreal CF - FK Astana
Referee: Srđan Jovanović (SRB)
Assistant Referee 1: Uroš Stojković (SRB)
Assistant Referee 2: Milan Mihajlović (SRB)
Additional Assistant Referee 1: Lazar Lukić (SRB)
Additional Assistant Referee 2: Zoran Siroki (SRB)
Fourth Official: Bojan Banović (SRB)
Group A, 14 September 2017, 19:00 CET
Eden Arena, Prague (CZE)
Slavia Praha - Maccabi Tel-Aviv
Referee: Robert Schörgenhofer (AUT)
Assistant Referee 1: Markus Gutschi (AUT)
Assistant Referee 2: Roland Riedel (AUT)
Additional Assistant Referee 1: Manuel Schüttengruber (AUT)
Additional Assistant Referee 2: Rene Eisner (AUT)
Fourth Official: Andreas Witschnigg (AUT)
Group B, 14 September 2017, 19:00 CET
NSK Olimpiyskiy, Kyiv (UKR)
FC Dynamo Kyiv - KS Skënderbeu
Referee: Bart Vertenten (BEL)
Assistant Referee 1: Rien Vanyzere (BEL)
Assistant Referee 2: Thibaud Nijssen (BEL)
Additional Assistant Referee 1: Wim Smet (BEL)
Additional Assistant Referee 2: Nathan Verboomen (BEL)
Fourth Official: Frédéric Godelaine (BEL)
Group B, 14 September 2017, 19:00 CET
Stade de Suisse, Berne (SUI)
BSC Young Boys - FK Partizan
Referee: István Kovács (ROU)
Assistant Referee 1: Vasile Florin Marinescu (ROU)
Assistant Referee 2: Mihai Ovidiu Artene (ROU)
Additional Assistant Referee 1: Ionuț Marius Avram (ROU)
Additional Assistant Referee 2: Horatiu Fesnic (ROU)
Fourth Official: Alexandru Cerei (ROU)
Group C, 14 September 2017, 19:00 CET
Rhein-Neckar Arena, Sinsheim (GER)
1899 Hoffenheim - Sporting Braga
Referee: Robert Madden (SCO)
Assistant Referee 1: David McGeachie (SCO)
Assistant Referee 2: Alastair Mather (SCO)
Additional Assistant Referee 1: Kevin Clancy (SCO)
Additional Assistant Referee 2: Greg Aitken (SCO)
Fourth Official: Francis Connor (SCO)
Group C, 14 September 2017, 19:00 CET
Başakşehir Fatih Terim Stadyumu, Istanbul (TUR)
İstanbul Başakşehir - PFC Ludogorets
Referee: Stefan Johannesson (SWE)
Assistant Referee 1: Fredrik Nilsson (SWE)
Assistant Referee 2: Magnus Sjöblom (SWE)
Additional Assistant Referee 1: Mohammed Al-Hakim (SWE)
Additional Assistant Referee 2: Kristoffer Karlsson (SWE)
Fourth Official: Joakim Amri Nilsson (SWE)
Group D, 14 September 2017, 19:00 CET
Ernst Happel Stadion, Vienna (AUT)
Austria Wien - AC Milan
Referee: Serdar Gözübüyük (NED)
Assistant Referee 1: Dave Goossens (NED)
Assistant Referee 2: Bas Van Dongen (NED)
Additional Assistant Referee 1: Dennis Higler (NED)
Additional Assistant Referee 2: Jeroen Manschot (NED)
Fourth Official: Jan De Vries (NED)
Group D, 14 September 2017, 19:00 CET
Stadion HNK Rijeka, Rijeka (CRO)
HNK Rijeka - AEK Athens
Referee: John Beaton (SCO)
Assistant Referee 1: Douglas Potter (SCO)
Assistant Referee 2: Sean Carr (SCO)
Additional Assistant Referee 1: Alan Muir (SCO)
Additional Assistant Referee 2: Euan Anderson (SCO)
Fourth Official: Stuart Stevenson (SCO)
Group E, 14 September 2017, 19:00 CET
Stadio Città del Tricolore, Reggio nell'Emilia (ITA)
Atalanta Bergamasca Calcio - Everton FC
Referee: Vladislav Bezborodov (RUS)
Assistant Referee 1: Valeri Danchenko (RUS)
Assistant Referee 2: Maksim Gavrilin (RUS)
Additional Assistant Referee 1: Kirill Levnikov (RUS)
Additional Assistant Referee 2: Igor Fedotov (RUS)
Fourth Official: Aleksei Lunev (RUS)
Group E, 14 September 2017, 19:00 CET
GSP, Nicosia (CYP)
Apollon Limassol - Olympique Lyonnais
Referee: Miroslav Zelinka (CZE)
Assistant Referee 1: Ondřej Pelikán (CZE)
Assistant Referee 2: Jan Paták (CZE)
Additional Assistant Referee 1: Radek Příhoda (CZE)
Additional Assistant Referee 2: Jan Jilek (CZE)
Fourth Official: Petr Blažej CZE)
Group F, 14 September 2017, 19:00 CET
Telia Parken, Copenhagen (DEN)
FC København - Lokomotiv Moskva
Referee: Hüseyin Göçek (TUR)
Assistant Referee 1: Mustafa Emre Eyisoy (TUR)
Assistant Referee 2: Kemal Yilmaz (TUR)
Additional Assistant Referee 1: Mete Kalkavan (TUR)
Additional Assistant Referee 2: Arda Kardeşler (TUR)
Fourth Official: Serkan Ok (TUR)
Group F, 14 September 2017, 19:00 CET
Ander Stadium, Olomouc (CZE)
FC Fastav Zlín - FC Sheriff Tiraspol
Referee: Andrew Dallas (SCO)
Assistant Referee 1: Graeme Stewart (SCO)
Assistant Referee 2: Alan Mulvanny (SCO)
Additional Assistant Referee 1: Donald Robertson (SCO)
Additional Assistant Referee 2: Nicholas Walsh (SCO)
Fourth Official: Joseph Lawson (SCO)
Group G, 14 September 2017, 21:05 CET
Turner Stadium, Beer-Sheva (ISR)
Hapoel Beer-Sheva - FC Lugano
Referee: Tony Chapron (FRA)
Assistant Referee 1: Cyril Mugnier (FRA)
Assistant Referee 2: Bertrand Jouannaud (FRA)
Additional Assistant Referee 1: Frank Schneider (FRA)
Additional Assistant Referee 2: Karim Abed (FRA)
Fourth Official: Eric Danizan (FRA)
Group G, 14 September 2017, 21:05 CET
Arena Națională, Bucharest (ROU)
FCSB - FC Viktoria Plzeň
Referee: Andris Treimanis (LVA)
Assistant Referee 1: Haralds Gudermanis (LVA)
Assistant Referee 2: Aleksejs Spasjonnikovs (LVA)
Additional Assistant Referee 1: Aleksandrs Golubevs (LVA)
Additional Assistant Referee 2: Edgars Malcevs (LVA)
Fourth Official: Raimonds Tatriks (LVA)
Group H, 14 September 2017, 21:05 CET
Emirates, London (ENG)
Arsenal FC - 1. FC Köln
Referee: Javier Estrada Fernández (ESP)
Assistant Referee 1: Miguel Martínez Munuera (ESP)
Assistant Referee 2: Teodoro Sobrino Magán (ESP)
Additional Assistant Referee 1: Jesús Gil Manzano (ESP)
Additional Assistant Referee 2: Ricardo de Burgos Bengoetxea (ESP)
Fourth Official: Pau Cebrián Devís (ESP)
Group H, 14 September 2017, 21:05 CET
Stadion Rajko Mitić, Belgrade (SRB)
FK Crvena Zvezda - BATE Borisov
Referee: Yevhen Aranovskiy (UKR)
Assistant Referee 1: Oleksandr Voytyuk (UKR)
Assistant Referee 2: Serhiy Bekker (UKR)
Additional Assistant Referee 1: Serhiy Boiko (UKR)
Additional Assistant Referee 2: Anatoliy Abdula (UKR)
Fourth Official: Semen Shlonchak (UKR)
Group I, 14 September 2017, 21:05 CET
Stade Vélodrome, Marseille (FRA)
Olympique de Marseille - Konyaspor Kulübü
Referee: Gediminas Mažeika (LTU)
Assistant Referee 1: Vytautas Šimkus (LTU)
Assistant Referee 2: Vytenis Kazlauskas (LTU)
Additional Assistant Referee 1: Donatas Rumšas (LTU)
Additional Assistant Referee 2: Robertas Valikonis (LTU)
Fourth Official: Dovydas Sužiedėlis (LTU)
Group I, 14 September 2017, 21:05 CET
Estádio D. Afonso Henriques, Guimarães (POR)
Vitória Sport Clube - FC Salzburg
Referee: Aliyar Aghayev (AZE)
Assistant Referee 1: Zeynal Zeynalov (AZE)
Assistant Referee 2: Rza Mammadov (AZE)
Additional Assistant Referee 1: Rahim Hasanov (AZE)
Additional Assistant Referee 2: Orkhan Mammadov (AZE)
Fourth Official: Mubariz Hashimov (AZE)
Group J, 14 September 2017, 21:05 CET
Olympiastadion, Berlin (GER)
Hertha BSC - Athletic Club
Referee: Ivan Kružliak (SVK)
Assistant Referee 1:Martin Balko (SVK)
Assistant Referee 2: Tomaš Somolani (SVK)
Additional Assistant Referee 1: Filip Glova (SVK)
Additional Assistant Referee 2: Mário Vlk (SVK)
Fourth Official: Tomaš Mokoš (SVK)
Group J, 14 September 2017, 21:05 CET
Arena Lviv, Lviv (UKR)
FC Zorya - Östersunds FK
Referee: Stephan Klossner (SUI)
Assistant Referee 1: Remy Zgraggen (SUI)
Assistant Referee 2: Marco Zürcher (SUI)
Additional Assistant Referee 1: Alain Bieri (SUI)
Additional Assistant Referee 2: Sandro Schärer (SUI)
Fourth Official: Jan Köbeli (SUI)
Group che, 14 September 2017, 21:05 CET
Gelredome, Arnhem (NED)
SBV Vitesse - SS Lazio
Referee: Liran Liany (ISR)
Assistant Referee 1: David Elias Biton (ISR)
Assistant Referee 2: Dvir Shimon (ISR)
Additional Assistant Referee 1: Erez Papir (ISR)
Additional Assistant Referee 2: Menashe Masiah (ISR)
Fourth Official: Idan Yarkoni (ISR)
Group che, 14 September 2017, 21:05 CET
Regenboogstadion, Waregem (BEL)
SV Zulte Waregem - OGC Nice
Referee: Ali Palabıyık (TUR)
Assistant Referee 1: Çem Satman (TUR)
Assistant Referee 2: Serkan Olguncan (TUR)
Additional Assistant Referee 1: Halil Umut Meler (TUR)
Additional Assistant Referee 2: Serkan Tokat (TUR)
Fourth Official: Kerem Ersoy (TUR)
Group L, 14 September 2017, 21:05 CET
Estadio Municipal de Anoeta, San Sebastián (ESP)
Real Sociedad - Rosenborg BK
Referee: Paolo Silvio Mazzoleni (ITA)
Assistant Referee 1: Fabiano Preti (ITA)
Assistant Referee 2: Matteo Passeri (ITA)
Additional Assistant Referee 1: Marco Guida (ITA)
Additional Assistant Referee 2: Marco Di Bello (ITA)
Fourth Official: Giorgio Peretti (ITA)
Group L, 14 September 2017, 21:05 CET
Philip II National Arena, Skopje (MKD
FK Vardar - FC Zenitt
Referee: Jakob Kehlet (DEN)
Assistant Referee 1: Henrik Larsen (DEN)
Assistant Referee 2: Heine Sørensen (DEN)
Additional Assistant Referee 1: Michael Tykgaard (DEN)
Additional Assistant Referee 2: Jens Maee (DEN)
Fourth Official: Lars Rix (DEN)