SSC Napoli – Liverpool FC
Referee: Trustin Farrugia Cann (MLT, photo)
Assistant Referee 1: Alan Camilleri (MLT)
Assistant Referee 2: Christoph Francalanza (MLT)
Fourth Official: Luca Massimi (ITA)
Referee Observer: Antonio Damato (ITA)
Internazionale Milano – Slavia Praha
Referee: Marcel Bîrsan (ROU)
Assistant Referee 1: Radu Ghinguleac (ROU)
Assistant Referee 2: Vladimir Urzică (ROU)
Fourth Official: Lorenzo Maggioni (ITA)
Referee Observer: Domenico Messina (ITA)
AFC Ajax – Lille OSC
Referee: Roomer Tarajev (EST)
Assistant Referee 1: Sten Klaasen (EST)
Assistant Referee 2: Egerd Pajustik (EST)
Fourth Official: Allard Lindhout (NED)
Referee Observer: Hans Reijgwart (NED)
Chelsea FC – Valencia CF
Referee: Paul McLaughlin (IRL)
Assistant Referee 1: Emmett Dynan (IRL)
Assistant Referee 2: Darragh Keegan (IRL)
Fourth Official: John Busby (ENG)
Referee Observer: Raymond Ellingham (WAL)
Red Bull Salzburg – KRC Genk
Referee: Kaarlo Hämäläinen (FIN)
Assistant Referee 1: Turkka Valjakka (FIN)
Assistant Referee 2: Eemeli Kettunen (FIN)
Fourth Official: Stefan Ebner (AUT)
Referee Observer: Robert Sedlacek (AUT)
Olympique Lyonnais – FC Zenit
Referee: Fedayi San (SUI)
Assistant Referee 1: Jean-Yves Wicht (SUI)
Assistant Referee 2: Jonas Erni (SUI)
Fourth Official: Aurélien Petit (FRA)
Referee Observer: Bertrand Layec (FRA)
Borussia Dortmund – FC Barcelona
Referee: Jørgen Daugbjerg Burchardt (DEN)
Assistant Referee 1: Niels Høg (DEN)
Assistant Referee 2: Ole Kronlykke (DEN)
Fourth Official: Tobias Reichel (GER)
Referee Observer: Edgar Steinborn (GER)
SL Benfica – RB Leipzig
Referee: Zbyněk Proske (CZE)
Assistant Referee 1: Radek Kotík (CZE)
Assistant Referee 2: Kamil Hájek (CZE)
Fourth Official: Miguel Nogueira (POR)
Shakhtar Donetsk – Manchester City
Referee: Manfredas Lukjančukas (LTU)
Assistant Referee 1: Vladimir Gerasimov (LTU)
Assistant Referee 2: Edgaras Bučinskas (LTU)
Fourth Official: Dmytro Kryvushkin (UKR)
Referee Observer: Viktor Shvetsov (UKR)
Olympiakós FC – Tottenham Hotspur
Referee: Tihomir Pejin (CRO)
Assistant Referee 1: Marjan Tomas (CRO)
Assistant Referee 2: Kruno Šarić (CRO)
Fourth Official: Evángelos Manoúchos (GRE)
Referee Observer: Geórgios Bíkas (GRE)
Atlético de Madrid – Juventus FC
Referee: Erik Lambrechts (BEL)
Assistant Referee 1: Rien Vanyzere (BEL)
Assistant Referee 2: Karel De Rocker (BEL)
Fourth Official: Manuel Pérez Hernández (ESP)
Referee Observer: Manuel López Fernández (ESP)
Bayer Leverkusen – Lokomotiv Moskva
Referee: Ívar Kristjánsson (ISL)
Assistant Referee 1: Birkir Sigurdarson (ISL)
Assistant Referee 2: Kristján Ólafs (ISL)
Fourth Official: Thorben Siewer (GER)
Referee Observer: Eugen Strigel (GER)
Club Brugge – Galatasaray
Referee: Sebastian Gishamer (AUT)
Assistant Referee 1: Johannes Pummerer (AUT)
Assistant Referee 2: Jasmin Sabanovic (AUT)
Fourth Official: Kevin Debeuckelaere (BEL)
GNK Dinamo – Atalanta BC
Referee: Aristotélis Diamandópoulos (GRE)
Assistant Referee 1: Konstantínos Triandafýllou (GRE)
Assistant Referee 2: Konstantínos Psárris (GRE)
Fourth Official: Ivan Vučković (CRO)
Paris Saint Germain – Real Madrid
Referee: Stephan Klossner (SUI)
Assistant Referee 1: Rémy Zgraggen (SUI)
Assistant Referee 2: Marco Zürcher (SUI)
Fourth Official: Romain Lissorgue (FRA)
Referee Observer: Stéphane Lannoy (FRA)
Bayern München – Crvena Zvezda
Referee: Vitali Romanov (UKR)
Assistant Referee 1: Vitali Skoblya (UKR)
Assistant Referee 2: Volodymyr Korotin (UKR)
Fourth Official: Michael Bacher (GER)
