Seconda giornata fase a gironi, gare di martedì 28 settembre 2021
18:45 CET - Amsterdam (Johan Cruijff ArenA)
AFC Ajax (NED) - Beşiktaş JK (TUR) | Group C
Referee: Benoît Bastien (FRA)
Assistant Referee 1: Hicham Zakrani (FRA)
Assistant Referee 2: Aurélien Berthomieu (FRA)
Fourth Official: Jérémie Pignard (FRA)
Video Assistant Referee: Willy Delajod (FRA)
Assistant Video Assistant Referee: Massimiliano Irrati (ITA)
UEFA Referee Observer: Leslie Irvine (NIR)
UEFA Delegate: Eduard Dervishaj Nelaj (ESP)
18:45 CET - Kyiv (NSC Olimpiyskyi)
FC Shakhtar Donetsk (UKR) - FC Internazionale Milano (ITA) | Group D
Referee: István Kovács (ROU)
Assistant Referee 1: Vasile Florin Marinescu (ROU)
Assistant Referee 2: Mihai Ovidiu Artene (ROU)
Fourth Official: Andrei Florin Chivulete (ROU)
Video Assistant Referee: Marco Fritz (GER)
Assistant Video Assistant Referee: Ovidiu Alin Hațegan (ROU)
UEFA Referee Observer: Jørn West Larsen (DEN)
UEFA Delegate: Michal Mertinyák (SVK)
21:00 CET - Paris (Parc des Princes)
Paris Saint-Germain (FRA) - Manchester City FC (ENG) | Group A
Referee: Carlos del Cerro Grande (ESP)
Assistant Referee 1: Pau Cebrián Devis (ESP)
Assistant Referee 2: Roberto Alonso Fernández (ESP)
Fourth Official: Santiago Jaime Latre (ESP)
Video Assistant Referee: Juan Martínez Munuera (ESP)
Assistant Video Assistant Referee: Christian Dingert (GER)
UEFA Referee Observer: Markus Nobs (SUI)
UEFA Delegate: Myrsini Psarropoulou (GRE)
21:00 CET - Leipzig (RB Arena)
RB Leipzig (GER) - Club Brugge (BEL) | Group A
Referee: Slavko Vinčić (SVN)
Assistant Referee 1: Tomaž Klančnik (SVN)
Assistant Referee 2: Andraž Kovačič (SVN)
Fourth Official: Nejc Kajtazović (SVN)
Video Assistant Referee: Paolo Valeri (ITA)
Assistant Video Assistant Referee: Maurizio Mariani (ITA)
UEFA Referee Observer: Stefan Messner (AUT)
UEFA Delegate: Scott Struthers (SCO)
21:00 CET - Porto (Estádio do Dragão)
FC Porto (POR) - Liverpool FC (ENG) | Group B
Referee: Sergei Karasev (RUS)
Assistant Referee 1: Igor Demeshko (RUS)
Assistant Referee 2: Maksim Gavrilin (RUS)
Fourth Official: Vladimir Moskalev (RUS)
Video Assistant Referee: Bastian Dankert (GER)
Assistant Video Assistant Referee: Vitaliy Meshkov (RUS)
UEFA Referee Observer: Haim Jakov (ISR)
UEFA Delegate: Rudolphe Mannaerts (BEL)
21:00 CET - Milan (Stadio Giuseppe Meazza)
AC Milan (ITA) - Club Atlético de Madrid (ESP) | Group B
Referee: Cüneyt Çakır (TUR)
Assistant Referee 1: Bahattin Duran (TUR)
Assistant Referee 2: Tarik Ongun (TUR)
Fourth Official: Arda Kardeşler (TUR)
Video Assistant Referee: Abdulkadir Bitigen (TUR)
Assistant Video Assistant Referee: Mete Klkavan (TUR)
UEFA Referee Observer: Guy Goethals (BEL)
UEFA Delegate: Charles John Grundie (NIR)
21:00 CET - Dortmund (BVB Stadion)
Borussia Dortmund (GER) - Sporting Clube de Portugal (POR) | Group C
Referee: Srdjan Jovanović (SRB)
Assistant Referee 1: Uroš Stojković (SRB)
Assistant Referee 2: Milan Mihajlović (SRB)
Fourth Official: Novak Simović (SRB)
Video Assistant Referee: Pol van Boekel (NED)
Assistant Video Assistant Referee: Kevin Blom (NED)
UEFA Referee Observer: Domenico Messina (ITA)
UEFA Delegate: Mark Blackbourne (ENG)
21:00 CET - Madrid (Estadio Santiago Bernabéu)
Real Madrid CF (ESP) - FC Sheriff Tiraspol (MDA) | Group D
Referee: Lawrence Visser (BEL)
Assistant Referee 1: Rien Vanyzere (BEL)
Assistant Referee 2: Thibaud Nijssen (BEL)
Fourth Official: Bram Van Driessche (BEL)
Video Assistant Referee: Clément Turpin (FRA)
Assistant Video Assistant Referee: Amaury Delerue (FRA)
UEFA Referee Observer: Herbert Fandel (GER)
UEFA Delegate: István Huszár (HUN)
Il rumeno Kovács per la trasferta dell'Inter in Ucraina, gara un anno fa diretta dal bulgaro Kabakov.
Per il Milan, big match in casa con l'Atletico, Cakir, in un ottimo periodo.
Esordio in Champions per il belga Visser a Madrid, gara assolutamente idonea.
Diversi VAR italiani sparsi, Orsato e forse anche Guida tutti e due in campo per le gare di mercoledì, presumibilmente.