Yep, that is Jordy Classie's race run.

The Dutchman goes for a sit-down and a sip of isotonic as Oriol Romeu takes on the role of midfield pitbull.

Jordy Clasie has gone down with a touch of cramp.

Would the lactic be biting so hard if his side were chasing 2-0 rather than defending it? Perhaps not.

Or perhaps it would. Oriol Romeu, formerly of Chelsea, is readying himself on the bench.

Steve Claridge
BBC Radio 5 Live at St Mary's

At this stage, 2-0 is massive. Arsenal don't look like getting one goal, never mind two. Unless there's a massive sea-change in this game, Southampton will win. The personnel clearly haven't functioned as they did against Manchester City. It hasn't suited them whatsoever.

Alex Oxlade-Chamberlain is being given a lecture on the sidelines in preparation for his arrival off the bench.

Finally he is fully briefed and the former Southampton man takes the place of Joel Campbell on Arsenal's right.

Southampton's second goal came against the run of play as Arsenal have been monopolising possession. 

Image source, Opta

An hour gone. Arsenal with a deep hole to dig themselves out of.

There are not a lot of options on the bench to help them either.

Alex Oxlade-Chamberlain? Maybe.

Alex Iwobi? Jeff Reine Adelaide?  Maybe less so.

Image source, AP

Arsene Wenger is doing his best impression of an angry eagle., external

You don't need to be a lip-reading expert to interpret the Arsenal manager telling the fourth official that the referee has made an "unbelievable" decision in letting that goal stand.

Steve Claridge
BBC Radio 5 Live at St Mary's

Look at Long and look at Koscielny. Does Long foul Koscielny? It's a foul. Long just trips Koscielny. It's a simple finish but if Koscielny stands up he tracks Long's run.

But it's a bit of poetic justice. It's just evened itself up there.

Image source, Getty Images

Oh, that is delicious!

Shane Long touches the ball into the path of Sadio Mane and motors into the box to meet his team-mates beautifully weighted return with a simple side-foot finish from 10 yards.

There was more space than there should have been in the box, because Laurent Koscielny tumbled as he tried to keep pace with Long.

Arsenal are not happy. Jon Moss says the goal stands though and that is what matters.

Steve Claridge
BBC Radio 5 Live at St Mary's

The ball comes straight from a free-kick to van Dijk. I don't know how you can give that. You couldn't see van Dijk. You are talking small margins but I don't see how you can give that. I think that's a legitimate goal.

Image source, Getty Images

Petr Cech got clattered by former Celtic man Van Dijk as the pair contested that cross.

While the Czech goalkeeper is down getting treatment, there is time to get stuck into the replays.

Even after a few viewings it was difficult to say whether the linesman made the right call. Van Dijk looked like he was just onside, but there were a host of Southampton players who were the wrong side of the last man when the ball was played in.

Virgil van Dijk up above Petr Cech, who has gone on a very ambitious rush off his line. 

It's into the net, but the flag is up.

Steve Claridge
BBC Radio 5 Live at St Mary's

Arsenal have lacked any fluency and any craft and Southampton have looked pretty comfortable. They have played the better game.

I'm more than happy to put a team together to join the Premier League for the second half of the season? I'll happily win it this year seeing nobody else can be bothered to? Ade  

Sadio Mane is still giving the Arsenal defence the slip.

The Southampton man, full of power and pace, muscles his way towards the byeline and teases a low cross into the corridor of uncertainty.

Steven Davis is closest to getting on the end of it, but is just squeezed out by the combined attentions of Per Mertesacker and Hector Bellerin.