Champions League
Group E
19 September 2018, 19:55 - Amsterdam (Johan Cruijff ArenA)
AFC Ajax (NED) - AEK Athens FC (GRE)
Referee: Carlos del Cerro Grande (ESP)
Assistant Referee 1: Juan Carlos Yusté Jiménez (ESP)
Assistant Referee 2: Roberto Alonso Fernández (ESP)
Fourth Official: Abrahám Álvarez Cantón (ESP)
Additional Assistant Referee 1: Juan Martínez Munuera (ESP)
Additional Assistant Referee 2: Santiago Jaime Latre (ESP)
UEFA Referee Observer: Luciano Luci (ITA)
UEFA Delegate: Michael Foster (ENG)
Europa League
Group F20 September 2018, 22:00 - Piraeus (Stádio Geórgios Karïskákis)
Olympiakós FC (GRE) - Real Betis Balompié (ESP)
Referee: Daniel Stefański (POL)
Assistant Referee 1: Marcin Boniek (POL)
Assistant Referee 2: Dawid Golis (POL)
Fourth Official: Krzysztof Myrmus (POL)
Additional Assistant Referee 1: Bartosz Frankowski (POL)
Additional Assistant Referee 2: Zbigniew Dobrynin (POL)
UEFA Referee Observer: Goran Mihaljević (MNE)
UEFA Delegate: José Guilherme Aguiar (POR)
Group L
20 September 2018, 19:55 - Thessaloniki (Stádio Toúmbas)
PAOK FC (GRE) - Chelsea FC (ENG)
Referee: Alberto Undiano Mallenco (ESP)
Assistant Referee 1: Raúl Cabañero Martínez (ESP)
Assistant Referee 2: Íñigo Prieto López de Ceraín (ESP)
Fourth Official: Javier Aguilar Rodríguez (ESP)
Additional Assistant Referee 1: José María Sánchez Martínez (ESP)
Additional Assistant Referee 2: José Luis González González (ESP)
UEFA Referee Observer: Laurent Duhamel (FRA)
UEFA Delegate: Pierino Lardi (SUI)