11-12 February 2020Derby County – Borussia Dortmund
Referee: Kevin Clancy (SCO, photo)
Assistant Referee 1: Kylie Cockburn (SCO)
Assistant Referee 2: Drew Kirkland (SCO)
Fourth Official: Martin Coy (ENG)
Referee Observer: John Ward (IRL)
FC Midtjylland – LOSC Lille
Referee: Robert Hennessy (IRL)
Assistant Referee 1: Emmett Dynan (IRL)
Assistant Referee 2: Allen Lynch (IRL)
Fourth Official: Morten Hansen (DEN)
Referee Observer: Jens Larsen (DEN)
Rangers FC – Atlético de Madrid
Referee: Jérôme Brisard (FRA)
Assistant Referee 1: Benjamin Pages (FRA)
Assistant Referee 2: François Boudikian (FRA)
Fourth Official: David Dickinson (SCO)
Referee Observer: Kenneth Clark (SCO)
Dynamo Kyiv – GNK Dinamo
Referee: Dumitru Muntean (MDA)
Assistant Referee 1: Vladislav Lifciu (MDA)
Assistant Referee 2: Vadim Vicol (MDA)
Fourth Official: Vladyslav Dorosh (UKR)
Referee Observer: Tomasz Mikulski (POL)
FC Porto – FC Salzburg
Referee: Halil Umut Meler (TUR)
Assistant Referee 1: Bersan Duran (TUR)
Assistant Referee 2: Sezgin Cinar (TUR)
Fourth Official: João Ferreira (POR)
Referee Observer: Lucilio Batista (POR)
Sheriff Tiraspol – Crvena Zvezda
Referee: Ádám Farkas (HUN)
Assistant Referee 1: Balázs Szert (HUN)
Assistant Referee 2: Balázs Szalai (HUN)
Fourth Official: Ion Orlic (MDA)
Referee Observer: Igor Satkii (MDA)
Stade Rennais – Club Brugge
Referee: Mads-Kristoffer Kristoffersen (DEN)
Assistant Referee 1: Dennis Rasmussen (DEN)
Assistant Referee 2: Victor Skytte (DEN)
Fourth Official: Benjamin Lepaysant (FRA)
Referee Observer: Luc Wouters (BEL)
Real Zaragoza – Olympique Lyonnais
Referee: Sascha Stegemann (GER)
Assistant Referee 1: Mike Pickel (GER)
Assistant Referee 2: Christian Gittelmann (GER)
Fourth Official: Sergio Usón Rosel (ESP)
Referee Observer: Mark Whitby (WAL)