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Santi Cazorla marks his 30th birthday with his second goal of the night, a very calmly taken Panenka of a penalty. Chipped right down the middle, flighted home nicely. Four flatters Arsenal but a good win for the Gunners.

Danny Welbeck gets behind Paul Dummett, the full-back leans on the striker, their knees collide and down he goes. Penalty.

Francis Coquelin - back from a loan spell with Charlton - replaces the outstanding Alexis Sanchez.

"There's only one Arsene Wenger" rings around the Emirates Stadium. The fans who booed him at Stoke train station don't appear to be the majority. Not this afternoon anyway.

Into the final 10 minutes. Looks like there could be at least one more goal in this one.

Newcastle now having another good spell as they pump two crosses deep into the Arsenal box. That's what Per Mertesacker is for - he heads them away all night. Daryl Janmaat gets booked for kicking the ball away and will miss the League Cup tie in midweek.

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Playing on tarmac! A great call. With a tennis ball as well.

Dan in Hitchin: Mourinho said last season, "I hate diving. My players know they will be in big trouble with me if they dive. It's very bad. The search of a red card to another player for me is a disgrace." I haven't heard such empty rhetoric other than Arsene Wenger saying he didn't see any of the incidents involving his players being sent off.

Simon in York: Football should be played on tarmac in my opinion. Then you'd applaud players for diving as they're literally putting their body on the line for the team.

Tom: One thing for me which is worse than diving, is waving the imaginary card at the ref! And for all of his talent, Alexis Sanchez is a culprit of that far to often!

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Arsenal have a two-on-one break, they should score but Danny Welbeck's run is poor and he coughs up possession after Alexis Sanchez had played him in. They made the same run there really, Sanchez needed Welbeck to pull wider and force last man Fabricio Coloccini into a tough decision.

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Plenty of you are reminiscing about that classic 4-4 draw between these two sides back in February 2011. We all remember Cheick Tiote's last-minute equaliser, but who else scored in that game?

Well, Arsenal went 4-0 up in the first 26 minutes through Theo Walcott, Johan Djourou and Robin van Persie (2). However, Newcastle came roaring back for a point courtesy of two Joey Barton penalties, a Leon Best strike and that long-range blaster from Tiote.

In the final 10 minutes, Newcastle's attack was spearheaded by Nile Ranger. Trying to keep Ranger quiet was Sebastien Squillaci.

Into the last 20 minutes. Arsenal still committing plenty of bodies forward. No sign of a shut-up shop approach yet. One more Newcastle goal would make life interesting...

Alistair in Bury: They have a "dubious goals panel". Why not have a "Diving Panel" if adjudged to have dived the player concerned receives a retrospective one game ban, that would soon stop it.

Greg in Hull: Fouls, handballs & diving. All not allowed, but why is diving the only thing people cry about as 'cheating'?

Olivier Giroud will not bag a hat-trick, he's being replaced with 20 minutes to go. On comes Lukas Podolski - to a huge cheer. The German remains popular in the stands, if not in the dugout.

David Penn: Newcastle need to keep their discipline now. With our current injury list we cannot afford any more suspensions

Hashim: Arsenal implosion forthcoming. Gunners, take cover.

Paul Harris: As usual Arsenal do the hard work then go to sleep - that's by far our biggest problem and has been for some time.

Ayoze Perez's goal (18:48 BST) has certainly worried some of the Arsenal fans. Does this match have 4-4 written all over it? Let us know using #bbcfootball, external on Twitter, send a text to 81111 (UK only), or post a comment on the BBC Sport Facebook, external or Google+, external page.

Slapstick stuff at the back from Newcastle as Fabricio Coloccini tries to play a one-two on his own deadball line. He's dispossessed by Danny Welbeck, he tees up Santi Cazorla for a blocked shot, someone else has a swing and it ends up at the feet of Kieran Gibbs. He cracks in a volley which flies into the side-netting. Coloccini has to get rid there. Put it away!

Great run into the box from Hector Bellerin again, he beats two men before his low cross is carved away at the near post. I'm not sure Bellerin is a right-back at heart but he has shown enough today to suggest that he could be a good player somewhere down the line.

Mathieu Flamini once scored a screamer against Newcastle - possibly Kevin Keegan's first game back? - and he has another go from outrageous distance. This time he finds Row L.

Former Newcastle defender John Anderson
BBC Radio Newcastle at the Emirates Stadium

"Ayoze Perez flicked a good header on the ball, but he didn't even celebrate - and you wonder why because there is still long enough for Newcastle to get back into it."

Where is the marking? Woeful defending from Arsenal as Ayoze Perez is left all alone to meet Jack Colback's free-kick and flick a header into the corner. He had plenty to do but stuck it away very smartly indeed. From nowhere, a lifeline. That's why Henry Whitfield is a pessimist...

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Stacy Phillips: What a brilliant finish from the acutest of angles. Happy birthday Santi Cazorla!

Abdul Said: Where would Arsenal be without Sanchez's goals or assists?

Aaran Higgs: Cazorla doesn't dive, gets a goal. Would a penalty have been given? Would other players have gone down.

Henry Whitfield: Three nil? Feeling comfortable? One word: Anderlecht.

Oh Henry, where is your optimism?