AC Milan – Atletico de Madrid
Referee: Miroslav Zelinka (CZE, photo)
Assistant Referee 1: Jan Patak (CZE)
Assistant Referee 2: Jakub Hrabovsky (CZE)
Fourth Official: Marco Piccinini (ITA)
Referee Observer: Matteo Trefoloni (ITA)
Shakhtar Donetsk – Inter Milano
Referee: Juri Frischer (EST)
Assistant Referee 1: Neeme Neemlaid (EST)
Assistant Referee 2: Riivo Stolts (EST)
Fourth Official: Oleksiy Derevinskyy (UKR)
Referee Observer: Volodymyr Petrov (UKR)
RB Leipzig – Club Brugge
Referee: Volen Chinkov (BUL)
Assistant Referee 1: Martin Venev (BUL)
Assistant Referee 2: Deniz Sokolov (BUL)
Fourth Official: Christof Günsch (GER)
Referee Observer: Karel Vidlak (CZE)
AFC Ajax – Beşiktaş JK
Referee: Peter Kjaersgaard (DEN)
Assistant Referee 1: Victor Skytte (DEN)
Assistant Referee 2: Jesper Dahl (DEN)
Fourth Official: Erwin Blank (NED)
Referee Observer: Rien Koopman (NED)
FC Porto – Liverpool FC
Referee: Jonathan Lardot (BEL)
Assistant Referee 1: Florian Lemaire (BEL)
Assistant Referee 2: Vito Di Vincenzo (BEL)
Fourth Official: Fabio de Oliveira (POR)
Referee Observer: Lucilio Batista (POR)
Borussia Dortmund – Sporting CP
Referee: Manfredas Lukjančukas (LTU)
Assistant Referee 1: Mangirdas Mirauskas (LTU)
Assistant Referee 2: Dainius Raudys (LTU)
Fourth Official: Nicolas Winter (GER)
Referee Observer: Robert Małek (POL)
Paris St. Germain – Manchester City
Referee: Ádám Farkas (HUN)
Assistant Referee 1: Theodoros Georgiou (HUN)
Assistant Referee 2: Gergő Vígh-Tarsonyi (HUN)
Fourth Official: Romain Lissorgue (FRA)
Referee Observer: Pascal Garibian (FRA)
Real Madrid – Sheriff Tiraspol
Referee: Kari a Høvdanum (FRO)
Assistant Referee 1: Jorleif Djurhuus (FRO)
Assistant Referee 2: Arni Rasmussen (FRO)
Fourth Official: Alvaro Rodríguez Recio (ESP)
Referee Observer: Salustia Chato (AND)
FC Zenit – Malmö FF
Referee: Artem Kuchin (KAZ)
Assistant Referee 1: Evgenıı Belskıı (KAZ)
Assistant Referee 2: Samat Tergeysizov (KAZ)
Fourth Official: Ivan Sidenkov (RUS)
Referee Observer: Nikolai Levnikov (RUS)
Atalanta BC – BSC Young Boys
Referee: Enea Jorgji (ALB)
Assistant Referee 1: Nertil Bregasi (ALB)
Assistant Referee 2: Emigers Gançi (ALB)
Fourth Official: Giovanni Ayroldi (ITA)
Referee Observer: Matteo Trefoloni (ITA)
Manchester United – Villarreal CF
Referee: Thorvaldur Arnason (ISL)
Assistant Referee 1: Johann Gudmundsson (ISL)
Assistant Referee 2: Andri Vigfusson (ISL)
Fourth Official: Anthony Backhouse (ENG)
Referee Observer: John Ferry (NIR)
FC Salzburg – LOSC Lille
Referee: Mohammed Al-Hakim (SWE)
Assistant Referee 1: Max Wilde (SWE)
Assistant Referee 2: Niklas Nyberg (SWE)
Fourth Official: Stefan Ebner (AUT)
Referee Observer: Robert Sedlacek (AUT)
SL Benfica – FC Barcelona
Referee: Anastasios Papapetrou (GRE)
Assistant Referee 1: Tryfon Petropoulos (GRE)
Assistant Referee 2: Iordanis Aptosoglou (GRE)
Fourth Official: Miguel Nogueira (POR)
Referee Observer: Joao Ferreira (POR)
Bayern München – Dynamo Kyiv
Referee: Trustin Farrugia Cann (MLT)
Assistant Referee 1: Luke Portelli (MLT)
Assistant Referee 2: Christopher Francalanza (MLT)
Fourth Official: Timo Gerach (GER)
Referee Observer: Attila Abraham (HUN)
VfL Wolfsburg – Sevilla FC
Referee: Urs Schnyder (SUI)
Assistant Referee 1: Marco Zürcher (SUI)
Assistant Referee 2: Benjamin Zürcher (SUI)
Fourth Official: Sven Waschitzki (GER)
Referee Observer: Albano Janku (ALB)
Juventus – Chelsea
Referee: Antonio Nobre (POR)
Assistant Referee 1: Luciano Maia (POR)
Assistant Referee 2: Nelson Pereira (POR)
Fourth Official: Lorenzo Maggioni (ITA)
Referee Observer: Alfredo Trentalange (ITA)
