Image source, AP

Olympiakos have held on to win 1-0 in Zagreb and sit second in Arsenal's group, level on points with Bayern Munich and three points ahead of the Gunners.

The goals have finally stopped in Germany, where Roma and Bayer Leverkusen drew 4-4 in a breathless contest.

Valencia and Zenit both won in Group H and look well positioned, while the holders Barcelona cruised to a 2-0 win away at BATE - Ivan Rakitic hit both. 

Chelsea are third in Group G after three games, they have four points and leaders Porto have seven. 

Hector Bellerin may well be he fastest player in the Premier League. Just before the second goal he put in a phenomenal 45-yard sprint to keep a dead ball alive and win a corner.

Image source, Reuters

Well, well, well! Arsenal remain bottom of Group F but their campaign is up and running. In the first half it looked like Bayern were dominant - but even then Manuel Neuer made a fantastic save to deny Theo Walcott. 

John Hartson
BBC Radio 5 live at the Emirates Stadium

"Absolutely brilliant by Bellerin. He uses his pace, hooks it across and yes it's Ozil and over the line. I can't believe they've beaten Bayern with all the possession Bayern have had. Goals win games.

"A massive result tonight. Arsenal needed a result and three points. They are firmly back in the group and it keeps the momentum going. On Saturday they can go top of the Premier League. They had to defend for their lives but what a win for Arsenal."

Image source, Reuters

A big win!

Almost sensational stuff! Robert Lewandowski turns Laurent Koscielny on the edge of the box, he gets inside the area and looks to pull the trigger but Koscielny does brilliantly to deflect it away...

FOUR MINUTES added on. Douglas Costa loses the ball and Mesut Ozil carries the ball 65 yards up the pitch, He can't find a fellow red shirt but he takes it away from danger...

Image source, Getty Images

Who are the only side in the Champions League with nine points from a possible nine?

Yep, Andre Villa-Boas is smiling. His Zenit side lead Lyon 3-1. All but into the last eight.

Petr Cech easily behind Thiago's rising strike from 20 yards to hang on to it. Arsenal inching towards a big Champions League win...

Image source, Reuters

What a game in Leverkusen. The two sides have now shared 30 shots and Roma -  two down at one point - have now blown their own two goal lead. Quick-fire goals from Kevin Kampl and Admir Mehmedi have pulled Leverkusen level. So Roma are not going to get that elusive away win in the Champions League. 

Make no mistake, this would be hugely damaging for the Italian side. They'd be bottom of their group on two points.

Arsenal have everyone back but they are containing the Bayern threat well. Famous last words. THREE MINUTES left.

Elsewhere in Group F Olympiakos are beating Dinamo Zagreb and will join Bayern on six points as it stands. 

Seven minutes left in Kiev. Jose Mourinho said before the game that he wants four points from two games against Dynamo. He is close to the first leg of that. 

Phil McNulty
BBC Sport chief football writer

"Now Arsenal have something to hang on to. And if they do their Champions League ambitions will really be revived. How can they play like this against Bayern and be so wretched against Monaco and Olympiakos?"

A few of you have let me know that there was an element of handball about that Olivier Giroud goal - and I can see it on second viewing. Giroud headed the ball against his own hand - he knew nothing about it.

Giroud has a chance again but heads it straight at Manuel Neuer. Neuer then runs into the Frenchman - who is booked for blocking him off.