Group E: Barcelona 2-1 Bayer Leverkusen - Bate Borisov 3-1 Roma

Group F: Arsenal 2-3 Olympiakos - Bayern Munich 5-0 Dinamo Zagreb

Group G: FC Porto 2-1 Chelsea - Maccabi Tel Aviv 0-2 Dynamo Kiev

Group F: Olympique Lyon 0-1 Valencia - Zenit St Petersburg 2-1 KAA Gent

Kostas Fortounis
Fortounis put Olympiakos ahead twice at The Emirates. Getty Images

So another bad night for Premier League clubs in the Champions League and once again the coefficient, which dictates the amount of places on offer to clubs in Europe's premier club competition, will take another battering.

That is all we have time for from The Emirates Stadium. We wait to hear from Arsene Wenger in the next 30 minutes or so regarding his selection tonight. We're back with live coverage of Manchester United and Manchester City's games against Bundesliga opposition in Wolfsburg and Borussia Monchengladbach, but until then goodbye.


Oxlade-Chamberlain shoots wide and that is it, Olympiakos claim their first ever win on English shores. Arsenal have zero points from their opening two group games, ahead of facing Bayern Munich in back-to-back matches. Another harrowing night for Premier League clubs in the Champions League.


Full time in Portugal and Jose Mourinho's Chelsea are beaten at his former club Porto. Diego Costa somehow didn't equalise late on. Can Arsenal grab a point?


Chelsea are meanwhile pushing hard for an equaliser themselves as Porto retreat into their shell but as yet Jose Mourinho's side are being frustrated.


Four added minutes to be played at the Emirates Stadium. Arsenal need them all.


Sanchez's free-kick from the right is turned over by Roberto. Has felt like a one-man effort from the Chilean this evening at times. Just a minute plus stoppage time to go.


Last throw of the dice from Arsene Wenger. Joel Campbell on for Arsenal. Less than five minutes remaining.


Goal: Bate Borisov 3-2 Roma (Torosidis)


Goal: Barcelona 2-1 Bayer Leverkusen (Luis Suarez)


Goal: Barcelona 1-1 Bayer Leverkusen (Sergi Roberto)


Porto within inches of going 3-1 up as Danilo heads against the post. Chelsea living dangerously as the game enters the final 10 minutes. Arsenal meanwhile continue to be frustrated.


Mesut Ozil's free-kick from the right-hand channel of the penalty area and Roberto makes a fine two-handed save. Bit of handbags now between Ozil and Pardo on the touchline ends with the German being yellow-carded for an illegal hand-off.


Chance out of nothing for Chelsea as Willian's corner is headed goalwards by Ivanovic but is flies wide of post and bar. Big chance, in the context of the pressure being exerted by Porto, who have been much the better side in this second half.


More pressure from Porto, who try to put the game out of sight, but Chelsea hold firm. Ramies and Pedro have both made way but the visitors are playing the role of survivor.


Goal: Bate Borisov 3-1 Roma (Gervinho)


Goal: Arsenal 2-3 Olympiakos (Alfred Finnbogason)

Incredible passage of play at The Emirates. Arsenal equalise through Alexis Sanchez's smart header but they are level for just a minute as Olympiakos march down the other end and go back in front for a third time. Cambiasso plays the ball over the Arsenal back four and when the cross comes in, half time substitute Finnbogason converts from five yards. Amazing.


Goal: Arsenal 2-2 Olympiakos (Alexis Sanchez)


Change for Chelsea as Eden Hazard replaces John Obi Mikel. No need to explain the thinking there. Mourinho searching a much-needed equaliser.


Change for Chelsea as Eden Hazard replaces John Obi Mikel. No need to explain the thinking there. Mourinho searching a much-needed equaliser.


Roberto turns over a deflected Oxlade-Chamberlain cross for a corner, from which the 'keeper beats away Cazorla's effort. A second wind from Arsenal.


Second change for Arsenal as Aaron Ramsey replaces Francis Coquelin. The equaliser almost comes immediately. Three times Roberto is tested from Sanchez's cross, first from his own defender before he denies Mertesacker and then Cazorla's shot is cleared off the line by Cambiasso. One of those moments that makes you think it could be Olympiakos' night.


Chelsea under real pressure in Portugal and they twice almost go behind. With very little in reserve on the bench in an attack sense, those on the pitch have to get it done for the Blues. Diego Costa incidentally, has been superb for the league champions.


Change for Arsenal enforced through injury as Laurent Koscielny is replaced by Per Mertesacker.


Goal: Bayern Munich 5-0 Dinamo Zagreb (Robert Lewandowski)