What a response! Lazio score twice in a matter of moments after conceding.

First Felipe Anderson blasts past several despairing Salzburg defenders to restore Lazio's advantage.

Then Lucas Leiva wins the ball back in midfield and feeds Ciro Immobile to score his 37th goal of the season. Scenes.

Image source, Reuters

Danny Welbeck should make this five. Aaron Ramsey's cross finds the Arsenal sub, who shoots straight at Igor Akinfeev from six yards.

Image source, Reuters

CSKA Moscow bring off Ahmed Musa, who has had a decent game. Teenager Khetag Khosonov replaces him.

CSKA Moscow only brought a few hundred fans - but not many of them appear to be wearing tops.

It's only 8C.

Image source, Reuters

Cup-tied Arsenal striker Pierre-Emerick Aubameyang is enjoying this...

He's barely been on the pitch a minute!

Substitute Takumi Minamino plays a one-two with Munas Dabbur and finishes coolly to equalise for Salzburg.

Manager Marco Rose should give himself a pat on the back.

Arsenal defender Hector Bellerin brings down Pontus Wernbloom and is the second Gunners player booked today.

Alexandre Lacazette is shaking his head on the bench - he wanted that hat-trick.

Image source, Reuters

Is Aaron Ramsey ever going to get a hat-trick today? He gets the ball from Alex Iwobi 20 yards out and his curling effort comes back off the post.

Jack Wilshere was replaced by Mohamed Elneny in that switch too.

Image source, Reuters

No hat-trick for Alexandre Lacazette today as he's replaced by Danny Welbeck, who Arsene Wenger said before the game had a "back problem".

CSKA bring on Georgi Milanov for Bibras Natcho.

David: Ozil in this form is up there with the best ballers in the world. Such brilliant vision!

Anon: Ozil is not a driver of a team. When it's going well for the whole team he's spraying mesmerising passes all over the place. When it's not his head drops and he disappears. Great players set the mood and tempo for the whole team to follow. That's what stops Özil being world class.

Mesut Ozil, who is having an excellent game, is almost on the scoresheet. Alex Iwobi squares, Ozil shoots and it's saved by Igor Akinfeev. Aaron Ramsey tries to turn the rebound in but he's offside.

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Collins: If Lacazette gets another penalty, I want him to give it to Petr Cech, that guy needs confidence too.

Nacho Monreal is the latest Arsenal player to have a go from a Mesut Ozil ball but his header is right at Igor Akinfeev.

Ozil's passing stats tonight must be crazy. He could have assisted about eight goals at this stage.

Image source, Reuters

Atletico Madrid really should have put this game to bed.

Centre-back Diego Godin had the ball in the back of the net, but Kevin Gameiro was ruled offside in the build-up.

Earlier Sebastien Coates' missed interception put Diego Costa in on goal. He tried to round Rui Patricio but the goalkeeper pinched the ball from his feet. The striker had too long to think about it basically.

Remarkable. Mesut Ozil plays in Alex Iwobi, who instead of shooting tries to roll the ball across goal for Alexandre Lacazette.

The hat-trick seeking Lacazette smashes the ball across goal and wide - it's a sitter, but he's sort of saved by the offside flag. It wouldn't have counted.

Why didn't Iwobi shoot though? Baffling.

Image source, Reuters

That's Alan Dzagoev's last action. Brazilian forward Vitinho, who scored against Manchester United in December, comes on.

CSKA have the ball in the net but it's disallowed for offside. Good decision.

Pontus Wernbloom's low shot is saved by Petr Cech, the ball loops into the air and Alan Dzagoev heads into the empty net.

But Dzagoev was offside when his team-mate took the initial shot.

Image source, Reuters

Gregory: Call me a dreamer but can foresee an all English European Super Cup.

Kieran: You'll have heard of the term 'Incurable optimists' but hopefully, tonight's result will medicate the many naysayers at AFC. Curable pessimists we could call them. :-)

Georgi Schennikov shoots a long way over the bar from towards the edge of the box. To be fair, CSKA look capable of scoring another goal. But Arsenal look like they could score another three.