UEFA Champions League – Group Stage (Matchday 6)

10 December 2013
Real Sociedad – Bayer Leverkusen
Referee: Tom Harald Hagen (NOR, photo)
Assistant Referee 1: Dag Roger Nebben (NOR)
Assistant Referee 2: Jan Erik Engan (NOR)
Additional AR 1: Dag Vidar Hafsas (NOR)
Additional AR 2: Ola Hobber Nilsen (NOR)
Fourth Official: Leif Erik Opland (NOR)
Referee Observer: Pierluigi Collina (ITA)

Manchester United – Shakhtar Donetsk
Referee: Milorad Mazic (SRB)
Assistant Referee 1: Milovan Ristic (SRB)
Assistant Referee 2: Dalibor Djurdjevic (SRB)
Additional AR 1: Danilo Grujic (SRB)
Additional AR 2: Miodrag Gogic (SRB)
Fourth Official: Milan Minic (SRB)
Referee Observer: Sergey Zuev (RUS)

Galatasaray – Juventus
Referee: Pedro Proenca (POR)
Assistant Referee 1: Bertino Miranda (POR)
Assistant Referee 2: Tiago Trigo (POR)
Additional AR 1: Joao Capela (POR)
Additional AR 2: Duarte Gomes (POR)
Fourth Official: Venancio Tome (POR)
Referee Observer: Sandor Piller (HUN)

FC Kobenhavn – Real Madrid

Referee: Felix Brych (GER)
Assistant Referee 1: Mark Borsch (GER)
Assistant Referee 2: Stefan Lupp (GER)
Additional AR 1: Marco Fritz (GER)
Additional AR 2: Robert Hartmann (GER)
Fourth Official: Tobias Christ (GER)
Referee Observer: Neale Barry (ENG)

SL Benfica – Paris SG
Referee: Mark Clattenburg (ENG)
Assistant Referee 1: Simon Beck (ENG)
Assistant Referee 2: Stephen Child (ENG)
Additional AR 1: Lee Probert (ENG)
Additional AR 2: Lee Mason (ENG)
Fourth Official: Simon Long (ENG)
Referee Observer: Laszlo Vagner (HUN)

Olympiacos – Anderlecht
Referee: Wolfgang Stark (GER)
Assistant Referee 1: Jan-Hendrik Salver (GER)
Assistant Referee 2: Mike Pickel (GER)
Additional AR 1: Tobias Welz (GER)
Additional AR 2: Tobias Stieler (GER)
Fourth Official: Detlef Scheppe (GER)
Referee Observer: Adrian Casha (MLT)

Bayern Munchen – Manchester City
Referee: David Fernandez Borbalan (ESP)
Assistant Referee 1: Jesus Calvo Guadamuro (ESP)
Assistant Referee 2: Jose Fernandez Miranda (ESP)
Additional AR 1: Cesar Muniz Fernandez (ESP)
Additional AR 2: Jesus Gil Manzano (ESP)
Fourth Official: Raul Cabanero Martinez (ESP)
Referee Observer: Alan Snoddy (NIR)

Viktoria Plzen – CSKA Moskva
Referee: Damir Skomina (SVN)
Assistant Referee 1: Primoz Arhar (SVN)
Assistant Referee 2: Bojan Ul (SVN)
Additional AR 1: Slavko Vincic (SVN)
Additional AR 2: Roberto Ponis (SVN)
Fourth Official: Robert Vukan (SVN)
Referee Observer: Stephen Bennett (ENG)

11 December 2013
Schalke – Basel
Referee: Paolo Tagliavento (ITA)
Assistant Referee 1: Andrea Stefani (ITA)
Assistant Referee 2: Renato Faverani (ITA)
Additional AR 1: Paolo Valeri (ITA)
Additional AR 2: Andrea De Marco (ITA)
Fourth Official: Nicola Nicoletti (ITA)
Referee Observer: Athanassios Briakos (GRE)

Chelsea – Steaua
Referee: Gianluca Rocchi (ITA)
Assistant Referee 1: Elenito Di Liberatore (ITA)
Assistant Referee 2: Gianluca Cariolato (ITA)
Additional AR 1: Luca Banti (ITA)
Additional AR 2: Antonio Damato (ITA)
Fourth Official: Alessandro Giallatini (ITA)
Referee Observer: Kaj Natri (FIN)

Napoli – Arsenal
Referee: Viktor Kassai (HUN)
Assistant Referee 1: Gyorgy Ring (HUN)
Assistant Referee 2: Vencel Toth (HUN)
Additional AR 1: Tamas Bognar (HUN)
Additional AR 2: Sandor Ando-Szabo (HUN)
Fourth Official: Robert Kispal (HUN)
Referee Observer: Konrad Plautz (AUT)

Olympique Marseille – Borussia Dortmund
Referee: Marijo Strahonja (CRO)
Assistant Referee 1: Sinisa Premuzaj (CRO)
Assistant Referee 2: Igor Krmar (CRO)
Additional AR 1: Ante Vucemilovic-Simunovic (CRO)
Additional AR 2: Igor Pristovnik (CRO)
Fourth Official: Ivica Modric (CRO)
Referee Observer: Gylfi Thor Orrason (ISL)

Atletico Madrid – FC Porto
Referee: Deniz Aytekin (GER)
Assistant Referee 1: Markus Hacker (GER)
Assistant Referee 2: Holger Henschel (GER)
Additional AR 1: Bastian Dankert (GER)
Additional AR 2: Daniel Siebert (GER)
Fourth Official: Marco Achmuller (GER)
Referee Observer: Terje Hauge (NOR)

Austria Wien – Zenit St. Petersburg
Referee: Aleksandar Stavrev (MKD)
Assistant Referee 1: Marjan Kirovski (MKD)
Assistant Referee 2: Dejan Kostadinov (MKD)
Additional AR 1: Dimitar Meckarovski (MKD)
Additional AR 2: Dejan Jakimovski (MKD)
Fourth Official: Nikola Karakolev (MKD)
Referee Observer: David Elleray (ENG)

FC Barcelona – Celtic Glasgow
Referee: Sergei Karasev (RUS)
Assistant Referee 1: Tikhon Kalugin (RUS)
Assistant Referee 2: Anton Averianov (RUS)
Additional AR 1: Maksim Layushkin (RUS)
Additional AR 2: Vitaly Meshkov (RUS)
Fourth Official: Dmitry Mosyakin (RUS)
Referee Observer: Stefan Ormandjiev (BUL)

AC Milan – Ajax Amsterdam
Referee: Howard Webb (ENG)
Assistant Referee 1: Michael Mullarkey (ENG)
Assistant Referee 2: Darren Cann (ENG)
Additional AR 1: Michael Dean (ENG)
Additional AR 2: Michael Jones (ENG)
Fourth Official: Peter Kirkup (ENG)
Referee Observer: Ryszard Wojcik (POL)