27-28 August 2019Referee: Ovidiu Haţegan (ROU, photo)
Assistant Referee 1: Octavian Șovre (ROU)
Assistant Referee 2: Sebastian Gheorghe (ROU)
Fourth Official: Sebastian Colţescu (ROU)
VAR: Szymon Marciniak (POL)
AVAR: Pawel Gil (POL)
Referee Observer: Francesco Bianchi (SUI)
Crvena Zvezda – BSC Young Boys
Referee: Anthony Taylor (ENG)
Assistant Referee 1: Gary Beswick (ENG)
Assistant Referee 2: Adam Nunn (ENG)
Fourth Official: Chris Kavanagh (ENG)
VAR: Stuart Attwell (ENG)
AVAR: Paul Tierney (ENG)
Referee Observer: Luciano Luci (ITA)
FC Krasnodar – Olympiakos FC
Referee: Damir Skomina (SVN)
Assistant Referee 1: Jure Praprotnik (SVN)
Assistant Referee 2: Robert Vukan (SVN)
Fourth Official: Rade Obrenović (SVN)
VAR: Massimiliano Irrati (ITA)
AVAR: Marco Di Bello (ITA)
Referee Observer: Rune Pedersen (NOR)
Slavia Praha – CFR Cluj
Referee: Gianluca Rocchi (ITA)
Assistant Referee 1: Filippo Meli (ITA)
Assistant Referee 2: Giorgio Peretti (ITA)
Fourth Official: Maurizio Mariani (ITA)
VAR: Paolo Valeri (ITA)
AVAR: Michael Fabbri (ITA)
Referee Observer: Tomasz Mikulski (POL)
AFC Ajax – Apoel FC
Referee: Felix Zwayer (GER)
Assistant Referee 1: Thorsten Schiffner (GER)
Assistant Referee 2: Marco Achmüller (GER)
Fourth Official: Tobias Welz (GER)
VAR: Sascha Stegemann (GER)
AVAR: Christian Dingert (GER)
Referee Observer: Lucílio Batista (POR)
Club Brugge – Linzer ASK
Referee: Felix Brych (GER)
Assistant Referee 1: Mark Borsch (GER)
Assistant Referee 2: Stefan Lupp (GER)
Fourth Official: Tobias Stieler (GER)
VAR: Bastian Dankert (GER)
AVAR: Marco Fritz (GER)
Referee Observer: William Young (SCO)