Right, that's all from this page.
We'll bring you manager and player reaction from Arsenal's win over Southampton on this link.
Job done for Arsenal.
They replace Manchester United in fifth place in the Premier League table.
Next stop: fourth place?
Saints haven't given up just yet. Jay Rodriguez supplies Manolo Gabbiadini, who earns a corner.
Boufal's corner sort of bobbles in and momentarily troubles Petr Cech, before falling firmly into his grasp.
Three added minutes. Arsenal look home and dry and up into fifth in the table.
Ian Funnell: That should be job done. Been very patchy but the 3pts was all that mattered tonight.
Some good play from Oriol Romeu, as he tees up Sofiane Boufal, but the Saints substitute can't land his left-footed effort on target.
Snap, crackle, pop.
Alexis Sanchez sends a cross over the box to Aaron Ramsey, who heads the ball up and over for Olivier Giroud to simply nod in.
Again, Arsenal made it look easy.
Three minutes on the pitch. Ball in the back of the net.
Olivier Giroud comes on to replace Danny Welbeck. He's done OK tonight and gets a warm reception from the travelling fans.
Dusan Tadic has gone off for Southampton, replaced by Jay Rodriguez.
Ten minutes left on the clock.
Sofiane Boufal tries to emulate Alexis Sanchez's goal by twisting and turning past four Arsenal defenders but unlike the Chilean, Boufal sticks his shot way off target.
Alexis Sanchez hasn't looked quite right since his goal. Is he injured? Or just wasting time at every possible moment? The referee has noticed his lethargy and is telling him he's going to add it on at the end. This doesn't seem to speed him up...
The ball bounces about the Arsenal box and Shane Long tries to get contact but Gunners defence scramble clear.
Sofiane Boufal goes down under a heavy challenge from Mesut Ozil and he gets a yellow for it. Free-kick Southampton...it comes to nothing.
Saints press again and Maya Yoshida gets some force on a header but it's easily collected by Petr Cech.
A brilliant ball in from Ryan Bertrand. It swerves in the air and lands kindly for James Ward-Prowse but his header is off-target.
That's the last action for the Southampton midfielder. Ward-Prowse is off, along with Nathan Redmond, and on comes Sofiane Boufal and Shane Long.
Southampton have one plan at the moment - get the ball lofted over to Manolo Gabbiadini. It's not really working.
Now Arsenal have a corner, which Mesut Ozil plays to Granit Xhaka, who drives the ball at Fraser Forster. The Saints keeper makes a solid punch away from danger.
Radio 5 live commentator at St Mary's
Arsenal have suddenly upped it and that was a magnificent goal from Sanchez.
He could have rushed it but he brilliantly decided to delay and dummy and, with his left foot, slotted it past Forster.
A lovely, lovely goal from Alexis Sanchez.
He's supplied by Mesut Ozil, and twists and turns around the Southampton defence before slotting home.
He made it look easy when he actually had little space to manoeuvre.
What did I just say? Jinxed it!
Southampton have drawn 0-0 in their last two matches. We could be heading for number three here.
Mesut Ozil tries to weave into the box from the left but Southampton clear their lines and pump it up field, but only Manolo Gabbiadini is back, so he's crowded out by Arsenal defenders.
Radio 5 live commentator at St Mary's
If Arsenal are serious about giving themselves Champions League football they are really going to have to step it up. They have been sloppy at best.
It hasn't been a great game.
Former Southampton manager Nigel Adkins is in the stands at St Mary's. It reminds me of my favourite ever quote from a football news conference.
Adkins: "What's the biggest room in your house?"
Reporter: "The living room?"
Adkins: "No, the room for improvement."
A foul throw from no other than Alexis Sanchez. I've seen it all now...
Nice play from Arsenal.
Hector Bellerin sweeps a cross to Aaron Ramsey, but he puts his first take wide and over.
Nacho Monreal is down holding his face after clashing with James Ward-Prowse, who's already on a yellow.
It looks accidental but the Arsenal defender might have to blink a bit to sort his vision out.
We're being told it's a hamstring injury for Alex Oxlade-Chamberlain. Not idea for Arsenal's run-in.
Hector Bellerin gifts the ball to Manolo Gabbiadini who supplies Steven Davis on the edge of the area.
But the Southampton captain makes a right hash of his first-time effort and it goes waaaaaay over the target and into the stands.
Back under way.
Let's all pray for goals, goals, goals please. Otherwise I'll be forced to reference more average pop stars.
Eamonn Hogan: Arsenal players must be on a fortune with all these testimonials they're playing!!!
Dimos: AFC's 4th consecutive half time 0-0? What's happening? End of season fatigue? The both ways sterilising effect of three at the back?
Arsenal's twitter feed have just posed the question: what would you change after the break?
Surely that's just asking for trouble in the current climate!
George B. Hughes: I share a birthday with Ronan Keating and he never responds to my invitation of a joint party.
Errm not a footballer, George...
Quamrul Hassan: October 7 ... Jermain Defoe and Diego Costa besides the good old Gilberto Silva and Sami Hyypia :)
Steve Wilson says it's decent. I'd say more average, middle of the road, unremarkable.
Like a Gary Barlow album. Not unpleasant, just a bit...meh.
Let's liven things up with some of your tweets about sharing a birthday with footballers...
Match of the Day commentator
Frustrating that the half-time whistle came for Arsenal because they felt like they were forcing the issue at the end of the half - a half in which Petr Cech made two decent saves from Gabbiadini and Redmond. A decent game.
Well, that was...ok?
Alexis Sanchez does well to find Hector Bellerin on the right, and the Arsenal sub whips the ball to Danny Welbeck who's prowling in the box.
Welbeck can't quite get on the end of it, though.
James Ward-Prowse is booked for a tackle on Danny Welbeck and Arsenal have a free-kick from distance.
Mesut Ozil to takes it, it falls on to the head of Shkodran Mustafi but his aim is weak and Fraser Forster gathers safely.
A great hit from Nathan Redmond! He drives the ball with force from just outside the area but Petr Cech gets his gloves to it and palms it out of play.
Gabbiadini takes the free-kick...it's bending....it's gone wide.
Nothing to see here.
Ryan Bertrand sends a long, looping ball towards an on-rushing Manolo Gabbiadini, but Petr Cech gets his mitts on it.
The Saints striker might have been just offside there.
Now Southampton earn a free-kick for Shkodran Mustafi's tackle on Dusan Tadic, about 30 yards out from goal. The Arsenal players - and manager - are not happy about it. They reckon he got the ball.