Hibernian FC – Aston Villa
Referee: Ricardo De Burgos Bengoetxea (ESP, photo)
Assistant Referee 1: Iker de Francisco Grijalba (ESP)
Assistant Referee 2: Jon Nunez Fernandez (ESP)
Fourth Official: Pablo Gonzalez Fuertes (ESP)
VAR: Jose Munuera Montero (ESP)
AVAR: Inigo Prieto Lopez (ESP)
Referee Observer: Michal Beneš (CZE)
Spartak Trnava – SK Dnipro
Referee: Juxhin Xhaja (ALB)
Assistant Referee 1: Rejdi Avdo (ALB)
Assistant Referee 2: Nertil Bregasi (ALB)
Fourth Official: Olsid Ferataj (ALB)
VAR: Kreshnik Barjamaj (ALB)
AVAR: Olsion Yzeiraj (ALB)
Referee Observer: Hannes Kaasik (EST)
Astana FK – FK Partizani
Referee: Donald Robertson (SCO)
Assistant Referee 1: Alan Mulvanny (SCO)
Assistant Referee 2: Daniel McFarlane (SCO)
Fourth Official: Grant Irvine (SCO)
VAR: Steven McLean (SCO)
AVAR: Gavin Duncan (SCO)
Referee Observer: Orhan Erdemir (TUR)
Tobyl FK – Viktoria Plzen
Referee: Marian Barbu (ROU)
Assistant Referee 1: Mihai Marica (ROU)
Assistant Referee 2: Imre Bucsi (ROU)
Fourth Official: Sebastian Colțescu (ROU)
VAR: Hakan Ceylan (TUR)
AVAR: Koray Gençerler (TUR)
Referee Observer: Jouni Hyytia (FIN)
Zalgiris Vilnius – Ferencvarosi TC
Referee: Igor Stojčevski (MKD)
Assistant Referee 1: Kuštrim Lika (MKD)
Assistant Referee 2: Daniel Vasilevski (MKD)
Fourth Official: Jovan Kačevski (MKD)
VAR: Ivan Bebek (CRO)
AVAR: Ante Culjak (CRO)
Referee Observer: Michail Argyrou (CYP)
FC Nordsjaelland – FK Partizan
Referee: Yigal Frid (ISR)
Assistant Referee 1: Matityahu Yakobov (ISR)
Assistant Referee 2: Omer Barbiro (ISR)
Fourth Official: Shalom Avraham (ISR)
VAR: Ziv Adler (ISR)
AVAR: Nati Dotan (ISR)
Referee Observer: David Malcolm (NIR)
Farul Constanța – HJK Helsinki
Referee: Philip Farrugia (MLT)
Assistant Referee 1: Alan Camilleri (MLT)
Assistant Referee 2: Roberto Vella (MLT)
Fourth Official: Ishmael Barbara (MLT)
VAR: Michael Fabbri (ITA)
AVAR: Daniele Paterna (ITA)
Referee Observer: Georgios Bikas (GRE)
PFK Levski – Eintracht Frankfurt
Referee: Adam Ladebäck (SWE)
Assistant Referee 1: Mehmet Culum (SWE)
Assistant Referee 2: Daniel Yng (SWE)
Fourth Official: Victor Wolf (SWE)
VAR: Jonas Hansen (DEN)
AVAR Jens Maae (DEN)
Referee Observer: Augustus Constantin (ROU)
Sepsi Sf. Gheorghe – Bodo Glimt
Referee: Ruddy Buquet (FRA)
Assistant Referee 1: Aurélien Drouet (FRA)
Assistant Referee 2: Guillaume Debart (FRA)
Fourth Official: Bastien Dechepy (FRA)
VAR: Willy Delajod (FRA)
AVAR: Thomas Leonard (FRA)
Referee Observer: Lassin Isaksen (FRO)
Fenerbahçe – FC Twente
Referee: Andrew Madley (ENG)
Assistant Referee 1: Ian Hussin (ENG)
Assistant Referee 2: Daniel Cook (ENG)
Fourth Official: Michael Salisbury (ENG)
VAR: David Coote (ENG)
AVAR: James Mainwaring (ENG)
Referee Observer: Laszlo Vagner (HUN)
Dynamo Kyiv – Beşiktaş
Referee: Darren England (ENG)
Assistant Referee 1: Simon Bennett (ENG)
Assistant Referee 2: Daniel Robathan (ENG)
Fourth Official: John Brooks (ENG)
VAR: Jarred Gillett (ENG)
AVAR: Neil Davies (ENG)
Referee Observer: Shmuel Shteif (ISR)
Rapid Wien – ACF Fiorentina
Referee: Igor Pajač (CRO)
Assistant Referee 1: Ivan Mihalj (CRO)
Assistant Referee 2: Vedran Djurak (CRO)
Fourth Official: Dario Kulušić (CRO)
VAR: Duje Strukan (CRO)
AVAR: Fran Jović (CRO)
Referee Observer: Michael Ross (NIR)
Maccabi Tel Aviv – NK Celje
Referee: Manfredas Lukjančukas (LTU)
Assistant Referee 1: Mangirdas Mirauskas (LTU)
Assistant Referee 2: Vytenis Kazlauskas (LTU)
Fourth Official: Mindaugas Jackus (LTU)
VAR: Pawel Pskit (POL)
AVAR: Pawel Raczkowski (POL)
Referee Observer: Antonio Damato (ITA)
Struga Trim Lum – Breidablik
Referee: Damian Sylwestrzak (POL)
Assistant Referee 1: Bartosz Heinig (POL)
Assistant Referee 2: Adam Karasewicz (POL)
Fourth Official: Pawel Malec (POL)
VAR: Piotr Lasyk (POL)
AVAR: Krzysztof Myrmus (POL)
Referee Observer: Cüneyt Çakir (TUR)
FC Midtjylland – Legia Warszawa
Referee: Mykola Balakin (UKR)
Assistant Referee 1: Dmytro Zaporozhenko (UKR)
Assistant Referee 2: Oleksandr Berkut (UKR)
Fourth Official: Vitaliy Romanov (UKR)
VAR: Viktor Kopiievskyi (UKR)
AVAR: Denys Shurman (UKR)
Referee Observer: Martin Hansson (SWE)
KAA Gent – Apoel
Referee: Sven Jablonski (GER)
Assistant Referee 1: Lasse Koslowski (GER)
Assistant Referee 2: Eduard Beitinger (GER)
Fourth Official: Florian Badstübner (GER)
VAR: Sascha Stegemann (GER)
AVAR: Franziska Wildfeuer (GER)
Referee Observer: Stavros Tritsonis (GRE)
LOSC Lille – HNK Rijeka
Referee: Atilla Karaoglan (TUR)
Assistant Referee 1: Cevdet Kömürcüoğlu (TUR)
Assistant Referee 2: Mehmet Tugral (TUR)
Fourth Official: Çagdaş Altay (TUR)
VAR: Alper Ulusoy (TUR)
AVAR: Serkan Tokat (TUR)
Referee Observer: Howard Webb (ENG)
KRC Genk – Adana Demirspor
Referee: Antonio Nobre (POR)
Assistant Referee 1: Pedro Ribeiro (POR)
Assistant Referee 2: Paulo Bras (POR)
Fourth Official: Bruno Vieira (POR)
VAR: Helder Malheiro (POR)
AVAR: Hugo Miguel (POR)
Referee Observer: Kristinn Jakobsson (ISL)
FC Ballkani – Bate Borisov
Referee: Volen Chinkov (BUL)
Assistant Referee 1: Ivo Kolev (BUL)
Assistant Referee 2: Petar Mitrev (BUL)
Fourth Official: Nikola Popov (BUL)
VAR: Ivaylo Stoyanov (BUL)
AVAR: Vasimir El-Khatib (BUL)
Referee Observer: Neale Barry (ENG)
CA Osasuna – Club Brugge
Referee: Benoît Millot (FRA)
Assistant Referee 1: Hicham Zakrani (FRA)
Assistant Referee 2: Julien Aube (FRA)
Fourth Official: Jeremy Stinat (FRA)
VAR: Pierre Gaillouste (FRA)
AVAR: Maika Vanderstichel (FRA)
Referee Observer: Igor Pristovnik (CRO)
AZ Alkmaar – SK Brann
Referee: Evangelos Manouchos (GRE)
Assistant Referee 1: Tryfonas Petropoulos (GRE)
Assistant Referee 2: Konstantinos Nikolaidis (GRE)
Fourth Official: Anastasios Papapetrou (GRE)
VAR: Angelos Evangelou (GRE)
AVAR: Aristotelis Diamantopoulos (GRE)
Referee Observer: Pawel Gil (POL)
Heart of Midlothian – PAOK
Referee: Andris Treimanis (LVA)
Assistant Referee 1: Haralds Gudermanis (LVA)
Assistant Referee 2: Aleksejs Spasjonņikovs (LVA)
Fourth Official: Aleksandrs Golubevs (LVA)
VAR: Clay Ruperti (NED)
AVAR: Edwin Van De Graaf (NED)
Referee Observer: Bariş Şimşek (TUR)