Qairat – Levski Sofia
Referee: Daniel Siebert GER (photo)
Assistant Referee 1: Jan Seidel GER
Assistant Referee 2: Rafael Foltyn GER
Fourth Official: Max Burda GER
VAR: Christian Dingert GER
AVAR: Johann Pfeifer GER
Referee Observer: Vladimir Antonov MDA
SABAH (AZE) vs. AARHUS (DEN)
Referee: Willy Delajod FRA
Assistant Referee 1: Erwan Finjean FRA
Assistant Referee 2: Valentin Evrard FRA
Fourth Official: Eric Wattellier FRA
Video Assistant Referee: Bastien Dechepy FRA
Assistant Video Assistant Referee: Nicolas Rainville FRA
Referee Observer: Alain Hamer LUX
BODØ/GLIMT (NOR) vs. UNION SAINT-GILLOISE (BEL)
Referee: Istvan Kovacs ROU
Assistant Referee 1: Mihai Marius Marica ROU
Assistant Referee 2: Ferencz Tunyogi ROU
Fourth Official: Horațiu Mircea Feșnic ROU
Video Assistant Referee: Andrew Dallas SCO
Assistant Video Assistant Referee: Greg Aitken SCO
Referee Observer: Karen Nalbandyan ARM
KAUNO ŽALGIRIS (LTU) vs. DINAMO ZAGREB (CRO)
Referee: Davide Massa ITA
Assistant Referee 1: Filippo Meli ITA
Assistant Referee 2: Alessio Berti ITA
Fourth Official: Livio Marinelli ITA
Video Assistant Referee: Daniele Doveri ITA
Assistant Video Assistant Referee: Manuel Volpi ITA
Referee Observer: Volodymyr Petrov UKR
NEC NIJMEGEN (NED) vs. OLYMBIAKÓS (GRE)
Referee: Maurizio Mariani ITA
Assistant Referee 1: Daniele Bindoni ITA
Assistant Referee 2: Alberto Tegoni ITA
Fourth Official: Luca Zufferli ITA
Video Assistant Referee: Michael Fabbri ITA
Assistant Video Assistant Referee: Davide Ghersini ITA
Referee Observer: Vlado Svilokos CRO
CRVENA ZVEZDA (SRB) vs. HAPOEL BE’ER SHEVA (ISR)
Referee: Glenn Nyberg SWE
Assistant Referee 1: Mahbod Beigi SWE
Assistant Referee 2: Andreas Söderkvist SWE
Fourth Official: Oscar Johnson SWE
Video Assistant Referee: Pol van Boekel NED
Assistant Video Assistant Referee: Richard Martens NED
Referee Observer: David Fernández Borbalán ESP
SLOVAN BRATISLAVA (SVK) vs. MJÄLLBY (SWE)
Referee: Michael Oliver ENG
Assistant Referee 1: Wade Smith ENG
Assistant Referee 2: Blake Antrobus ENG
Fourth Official: Farai Hallam ENG
Video Assistant Referee: Michael Salisbury ENG
Assistant Video Assistant Referee: Darren England ENG
Referee Observer: Gianluca Rocchi ITA
CELJE (SVN) vs. ARARAT-ARMENIA (ARM)
Referee: Marco Guida ITA
Assistant Referee 1: Giorgio Peretti ITA
Assistant Referee 2: Valerio Colarossi ITA
Fourth Official: Fabio Maresca ITA
Video Assistant Referee: Aleandro Di Paolo ITA
Assistant Video Assistant Referee: Francesco Meraviglia ITA
Referee Observer: Levan Paniashvili GEO
STURM GRAZ (AUT) vs. FENERBAHÇE (TUR)
Referee: Alejandro José Hernández Hernández ESP
Assistant Referee 1: José Enrique Naranjo Pérez ESP
Assistant Referee 2: Marcos Cerdán Aguilar ESP
Fourth Official: Alejandro Quintero González ESP
Video Assistant Referee: César Soto Grado ESP
Assistant Video Assistant Referee: Valentín Pizarro Gómez ESP
Referee Observer: Helmut Fleischer GER
OLYMPIQUE LYONNAIS (FRA) vs. SPARTA PRAHA (CZE)
Referee: Szymon Marciniak POL
Assistant Referee 1: Tomasz Listkiewicz POL
Assistant Referee 2: Adam Kupsik POL
Fourth Official: Wojciech Myć POL
Video Assistant Referee: Piotr Lasyk POL
Assistant Video Assistant Referee: Fedayi San SUI
Referee Observer: Lassin Isaksen FRO