18-19 August 2020Ararat Armenia – AC Omonia
Referee: Sebastian Colțescu (ROU, photo)
Assistant Referee 1: Radu Ghinguleac (ROU)
Assistant Referee 2: Vladimir Urzică (ROU)
Fourth Official: Radu Petrescu (ROU)
Referee Observer: Andrejs Sipailo (LVA)
Legia Warszawa – Linfield FC
Referee: Nicolas Laforge (BEL)
Assistant Referee 1: Laurent Conotte (BEL)
Assistant Referee 2: Florian Lemaire (BEL)
Fourth Official: Jan Boterberg (BEL)
Referee Observer: Haim Jakov (ISR)
Dynama Brest – FC Astana
Referee: Tomasz Musiał (POL)
Assistant Referee 1: Radosław Siejka (POL)
Assistant Referee 2: Marcin Boniek (POL)
Fourth Official: Paweł Raczkowski (POL)
Referee Observer: Igor Pristovnik (CRO)
Qarabağ – Sileks
Referee: Yaroslav Kozyk (UKR)
Assistant Referee 1: Viktor Nyzhnyk (UKR)
Assistant Referee 2: Volodymyr Korotin (UKR)
Fourth Official: Anatoliy Abdula (UKR)
Referee Observer: Attila Ábrahám (HUN)
Celtic – KR
Referee: Sebastian Gishamer (AUT)
Assistant Referee 1: Markus Gutschi (AUT)
Assistant Referee 2: Robert Steinacher (AUT)
Fourth Official: Markus Hameter (AUT)
Referee Observer: Raymond Ellingham (WAL)
Crvena Zvezda – Europa FC
Referee: Timótheos Christofí (CYP)
Assistant Referee 1: Michaíl Sotiríou (CYP)
Assistant Referee 2: Mários Kalogírou (CYP)
Fourth Official: Kyriákos Christodoúlou (CYP)
Referee Observer: Karen Nalbandyan (ARM)
Molde FK – KuPS
Referee: Bryn Markham-Jones (WAL)
Assistant Referee 1: Lewiss Edwards (WAL)
Assistant Referee 2: Johnathon Bryant (WAL)
Fourth Official: Simon Lee Evans (WAL)
Referee Observer: Edgar Steinborn (GER)
Flora Tallinn – FK Sūduva
Referee: Nejc Kajtazovič (SVN)
Assistant Referee 1: Manuel Vidali (SVN)
Assistant Referee 2: Tomislav Pospeh (SVN)
Fourth Official: Asmir Sagrkovič (SVN)
Referee Observer: Lassin Isaksen (FRO)
Maccabi Tel Aviv – Riga FC
Referee: Igor Pajač (CRO)
Assistant Referee 1: Bojan Zobenica (CRO)
Assistant Referee 2: Vedran Djurak (CRO)
Fourth Official: Ivan Vučković (CRO)
Referee Observer: Michalís Koukoulákis (GRE)
Dinamo Tbilisi – KF Tirana
Referee: Roomer Tarajev (EST)
Assistant Referee 1: Neeme Neemlaid (EST)
Assistant Referee 2: Sander Saga (EST)
Fourth Official: Karl Koppel (EST)
Referee Observer: Asim Xudiyev (AZE)
NK Celje – Dundalk FC
Referee: Vítor Ferreira (POR)
Assistant Referee 1: Bruno Rodrigues (POR)
Assistant Referee 2: Paulo Duarte (POR)
Fourth Official: Iancu Vasilica (POR)
Referee Observer: William Young (SCO)
Ferencvárosi TC – Djurgardens IF
Referee: Fedayi San (SUI)
Assistant Referee 1: Sladan Josipovic (SUI)
Assistant Referee 2: Pascal Hirzel (SUI)
Fourth Official: Alain Bieri (SUI)
Referee Observer: Luc Wouters (BEL)
Sheriff Tiraspol – Fola Esch
Referee: Balázs Berke (HUN)
Assistant Referee 1: Vencel Tóth (HUN)
Assistant Referee 2: Balázs Szert (HUN)
Fourth Official: Gergő Bogár (HUN)
Referee Observer: Vadims Direktorenko (LVA)
Connahs Quay Nomads – FK Sarajevo
Referee: Jamie Robinson (NIR)
Assistant Referee 1: Gareth Eakin (NIR)
Assistant Referee 2: Paul Robinson (NIR)
Fourth Official: Lee Tavinder (NIR)
Referee Observer: Kenneth Clark (SCO)
Buducnost Podgorica – PFC Ludogorets
Referee: Ferenc Karakó (HUN)
Assistant Referee 1: István Albert (HUN)
Assistant Referee 2: Theodoros Georgiou (HUN)
Fourth Official: Ádám Farkas (HUN)
Referee Observer: Karel Vidlák (CZE)
KI – Slovan Bratislava
Referee: Kristoffer Hagenes (NOR)
Assistant Referee 1: Tom Grønevik (NOR)
Assistant Referee 2: Geir Isaksen (NOR)
Fourth Official: Sigurd Kringstad (NOR)
Referee Observer: Cyril Zimmermann (SUI)
Floriana FC – CFR Cluj
Referee: Laurent Kopriwa (LUX)
Assistant Referee 1: Joaquim Da Silva (LUX)
Assistant Referee 2: Claude Ries (LUX)
Fourth Official: Jérémy Muller (LUX)
Referee Observer: Chrístos Nikolaidis (CYP)