He can't believe it, but Newcastle striker Aleksandar Mitrovic is off for Newcastle.

It's a classic forward's challenge really, a bad touch, another bad touch and then a stretch to retrieve it. Instead he rakes down the shin of Francis Coquelin. Over the top of the ball, ugly. A straight red though?

Image source, Getty Images

Danny Mills
BBC Radio 5 live at St James's Park

"I think Hector Bellerin gets trodden on. It doesn't have to be intentional. By the letter of the law, that should have been a penalty."  

Arsenal should have a penalty as Hector Bellerin is baulked going into the box - a stonewaller if ever there was one. Referee says no!

Don't forget, there are plenty of updates here but you can follow minute-by-minute updates of that game in a separate page - click here to follow action from St James' Park.

As West Ham so politely remind me, we are an hour away form a team news announcement at six grounds.

Who are you sweating on?

Danny Mills
BBC Radio 5 live at St James's Park

"You need to play to Theo Walcott's strengths. Get the ball in behind the Newcastle defence. But Steve McClaren is quite shrewd and will have changed his tactics."

'Boooooooooooooo!' is the half-time reaction from the Derby faithful. Tells you all you need to know. 

Danny Mills
BBC Radio 5 live at St James's Park

 "Looking at the game so far, I have concerns for Arsenal. Theo Walcott is not a target man. It's going to have to be that perfect tippy-tappy goal."  

Arsenal have had 77% of the early play without hurting Newcastle - but hang on! A neat move involving Hector Bellerin sends Theo Walcott in behind and he is closed down superbly by Tim Krul, who smothers his shot. Good goalkeeping. 

Image source, Reuters

Danny Mills
BBC Radio 5 live at St James's Park

"Arsenal's biggest problem has been converting chances. If only they could finish as well as Mo Farah did!"

Conor McNamara
BBC Radio 5 live commentator at St James's Park

"This is the first time in two years that Theo Walcott and Alex Oxlade-Chamberlain have started an Arsenal game alongside each other."

'Get into 'em!' was obviously the war cry in the Newcastle changing room before the game as they hound Arsenal at every chance. Moussa Sissoko gets carried away though, treading on Nacho Monreal and that's a yellow all day.

Game on...

Never in doubt. Mo Farah with the kick of a top-class full-back to ease to another gold medal.

Follow reaction here.

Here come the players at St James'. Theo Walcott up front today, is that the answer? I still reckon the Gunners need a better striker.

Don't forget, there are plenty of updates here but you can follow minute-by-minute updates of that game in a separate page - click here to follow action from St James' Park.

Mo Farah (12:34) is running for another gold and I'm sure I read somewhere that he was a useful right-back in his younger days.

Image source, Getty Images

But which other athletes would you pick in a track & Field XI, and why?

Got to be Daley Thompson in midfield for me. Iron man.

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You say rubbish Ravi, I think that's as good a level of small talk you can expect from a man dressed only in a towel.

Arsenal fan Mo Farah is under way in his world 5,000m final. You can WATCH HERE.