Image source, EPA

It had to happen. It's a hat-trick for Robert Lewandowski (again). That's his 10th goal in just three matches, as Bayern Munich go 5-0 up at home to Dinamo Zagreb. That can't be good for Arsenal...

Elsewhere, there's shocks aplenty. BATE Borisov are still leading Roma by three goals to nil, while Barcelona still trail Bayer Leverkusen 1-0 at home.

And in the other game in Chelsea's group, Dynamo Kiev lead 2-0 at Maccabi Tel Aviv.

It never rains, but it Pers.

Arsenal have to make a change as Laurent Koscielny pulls a muscle while making a sliding tackle. Time for the BFG Per Mertesacker to come on instead. Get him up front!

He's 31 today apparently. What a way to spend your birthday. 

Tristan Mayglothing: Am I missing something? Ivanovic has been awful all season and is not only picked each week, but is now captain?? Good grief.

Thanks for your votes tonight, as ever. 

Both Championship games are still goalless and back under way with a change in each.

Liverpool loanee Sheyi Ojo has replaced Nathan Byrne for Wolves, but it's a change for the officials in the other game.

Referee Keith Hill has fallen ill and been replaced with fourth official, James Linington who will oversee the second half of Brentford v Birmingham.

Delicious! Chelsea's defence may be playing like schookids but Diego Costa is playing superbly this evening. Costa tries a shot from a good 25 yards out, wide on the left, and he bends and dips it over and past Iker Casillas but not the crossbar. Deserved a goal. 

Mark Lawrenson
BBC Radio 5 live in the Estadio do Dragao

Image source, Reuters

"The corner seriously embarrassed Chelsea - there was nobody on the post! If there's a player on the post, he takes it on the stomach and volleys the ball into the stands."

Shah Iftekhar: If Arsenal can't even beat Olympiakos at home then what makes them think they even stand a chance v Bayern?

Zac Lott: I just don't get why Wenger would rest Cech -a player with over 100 CL appearances and a winners medal - in such a huge game.

Image source, Reuters

Arsenal look like they have had a half-time rocket from Mr. Wenger, playing at a much faster tempo since the break.

Can they Arsenalise the second half?

Chelsea fashion a smart chance straight from kick-off as Willian finds Diego Costa - but his shot is deflected wide. Diego Costa has been bright as a button. The nuclear button maybe?

Not one home side are ahead in League Two..

Yeovil have equalised at Accrington and Northampton have made it 1-1 at Wimbledon.

Notts County, Bristol Rovers, Luton, Barnet and Exeter are all a goal up.

At the bottom, Crawley look to be ending their four-game losing streak at Newport - they lead 2-0.

And back under way at the Emirates too. Arsenal in dire need of a comeback. 

Back under way at the Dragao.

David Ljunggren: I think the English language needs a new and exciting word for "utterly laughable" to describe Ospina's ball handling skills.  

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Facebook is NOT down tonight, so why not bask in the glory of the latest and best images from tonight's Champions League action?

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That David Ospina own goal was a shambles. The worst thing about it is that there wasn't even a striker anywhere near him, really. He could have headed it out!

Image source, Getty Images

Gillingham have pulled off a storming comeback against Fleetwood at Priestfield. After being a goal down, they are now 4-1 up.

Colchester are 2-0 up against Bradford, Peterborough and Bury are drawing 1-1, Oldham are on course for their first win in seven, a goal ahead at Port Vale.

Shrewsbury have pulled two back to make it 3-2 to Rochdale, and Walsall are still 1-0 up at Scunthorpe.

Even stuff at Porto...

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With regards to Michelle's text below, Branislav Ivanovic can only do a four-point turn at the moment. At best. I don't know what has happened to him.