UEFA Champions League – Group Stage (Matchday 1)

12 September 2017
FC Barcelona – Juventus
Referee: Damir Skomina (SVN, photo)
Assistant Referee 1: Jure Praprotnik (SVN)
Assistant Referee 2: Robert Vukan (SVN)
Additional AR 1: Matej Jug (SVN)
Additional AR 2: Slavko Vinčič (SVN)
Fourth Official: Tomaž Klančnik (SVN)
Referee Observer: Eugen Strigel (GER)

Manchester United – FC Basel
Referee: Ruddy Buquet (FRA)
Assistant Referee 1: Guillaume Debart (FRA)
Assistant Referee 2: Frédéric Cano (FRA)
Additional AR 1: Amaury Delerue (FRA)
Additional AR 2: François Letexier (FRA)
Fourth Official: Cyril Gringore (FRA)
Referee Observer: Alfredo Trentalange (ITA)

SL Benfica – CSKA Moskva
Referee: Alberto Undiano Mallenco (ESP)
Assistant Referee 1: Roberto Alonso Fernández (ESP)
Assistant Referee 2: Juan Yuste Jiménez (ESP)
Additional AR 1: Alejandro Hernández Hernández (ESP)
Additional AR 2: José Sánchez Martínez (ESP)
Fourth Official: Roberto Díaz Pérez (ESP)
Referee Observer: Guy Goethals (BEL)

Bayern München – RSC Anderlecht
Referee: Paolo Tagliavento (ITA)
Assistant Referee 1: Filippo Meli (ITA)
Assistant Referee 2: Alessandro Costanzo (ITA)
Additional AR 1: Paolo Valeri (ITA)
Additional AR 2: Daniele Doveri (ITA)
Fourth Official: Alessandro Giallatini (ITA)
Referee Observer: Oguz Sarvan (TUR)

Celtic FC – Paris SG
Referee: Daniele Orsato (ITA)
Assistant Referee 1: Riccardo Di Fiore (ITA)
Assistant Referee 2: Lorenzo Manganelli (ITA)
Additional AR 1: Davide Massa (ITA)
Additional AR 2: Antonio Damato (ITA)
Fourth Official: Andrea Crispo (ITA)
Referee Observer: Terje Hauge (NOR)

Chelsea – Qarabag

Referee: Anastasios Sidiropoulos (GRE)
Assistant Referee 1: Polychronis Kostaras (GRE)
Assistant Referee 2: Lazaros Dimitriadis (GRE)
Additional AR 1: Charalambos Kalogeropoulos (GRE)
Additional AR 2: Alexandros Aretopoulos (GRE)
Fourth Official: Damianos Efthimiadis (GRE)
Referee Observer: Paulius Malžinskas (LTU)

AS Roma – Atlético de Madrid
Referee: Milorad Mažić (SRB)
Assistant Referee 1: Milovan Ristić (SRB)
Assistant Referee 2: Dalibor Djurdjević (SRB)
Additional AR 1: Nenad Djokić (SRB)
Additional AR 2: Danilo Grujić (SRB)
Fourth Official: Nemanja Petrović (SRB)
Referee Observer: Vítor Melo Pereira (POR)

Olympiacos – Sporting
Referee: Viktor Kassai (HUN)
Assistant Referee 1: György Ring (HUN)
Assistant Referee 2: Vencel Tóth (HUN)
Additional AR 1: Tamás Bognár (HUN)
Additional AR 2: Sándor Szabó (HUN)
Fourth Official: Peter Berettyán (HUN)
Referee Observer: Luciano Luci (ITA)

13 September 2017
Liverpool – Sevilla
Referee: Danny Makkelie (NED)
Assistant Referee 1: Mario Diks (NED)
Assistant Referee 2: Hessel Steegstra (NED)
Additional AR 1: Kevin Blom (NED)
Additional AR 2: Jochem Kamphuis (NED)
Fourth Official: Joost Van Zuilen (NED)
Referee Observer: Peter Fröjdfeldt (SWE)

NK Maribor – Spartak Moskva
Referee: Deniz Aytekin (GER)
Assistant Referee 1: Guido Kleve (GER)
Assistant Referee 2: Mark Borsch (GER)
Additional AR 1: Marco Fritz (GER)
Additional AR 2: Benjamin Brand (GER)
Fourth Official: Eduard Beitinger (GER)
Referee Observer: Georgios Bikas (GRE)

Feyenoord – Manchester City
Referee: Szymon Marciniak (POL)
Assistant Referee 1: Paweł Sokolnicki (POL)
Assistant Referee 2: Tomasz Listkiewicz (POL)
Additional AR 1: Paweł Raczkowski (POL)
Additional AR 2: Tomasz Musiał (POL)
Fourth Official: Radosław Siejka (POL)
Referee Observer: William Young (SCO)

Shakhtar Donetsk – SSC Napoli
Referee: Felix Zwayer (GER)
Assistant Referee 1: Thorsten Schiffner (GER)
Assistant Referee 2: Marco Achmüller (GER)
Additional AR 1: Daniel Siebert (GER)
Additional AR 2: Sascha Stegemann (GER)
Fourth Official: Rafael Foltyn (GER)
Referee Observer: Costas Kapitanis (CYP)

RB Leipzig – AS Monaco
Referee: Michael Oliver (ENG)
Assistant Referee 1: Stuart Burt (ENG)
Assistant Referee 2: Simon Bennett (ENG)
Additional AR 1: Andre Marriner (ENG)
Additional AR 2: Robert Madley (ENG)
Fourth Official: Harry Lennard (ENG)
Referee Observer: Jaap Uilenberg (NED)

FC Porto – Beşiktaş JK
Referee: Anthony Taylor (ENG)
Assistant Referee 1: Gary Beswick (ENG)
Assistant Referee 2: Adam Nunn (ENG)
Additional AR 1: Craig Pawson (ENG)
Additional AR 2: Jonathan Moss (ENG)
Fourth Official: Constantine Hatzidakis (ENG)
Referee Observer: Lutz Fröhlich (GER)

Real Madrid – Apoel FC
Referee: Benoît Bastien (FRA)
Assistant Referee 1: Hicham Zakrani (FRA)
Assistant Referee 2: Frédéric Haquette (FRA)
Additional AR 1: Benoît Millot (FRA)
Additional AR 2: Jérôme Miguelgorry (FRA)
Fourth Official: Julien Pacelli (FRA)
Referee Observer: Bo Karlsson (SWE)

Tottenham Hotspur – Borussia Dortmund
Referee: Gianluca Rocchi (ITA)
Assistant Referee 1: Elenito Di Liberatore (ITA)
Assistant Referee 2: Mauro Tonolini (ITA)
Additional AR1: Luca Banti (ITA)
Additional AR 2: Massimiliano Irrati (ITA)
Fourth Official: Alberto Tegoni (ITA)
Referee Observer: Michel Piraux (BEL)