Southampton started campaign with a goalless draw against Swansea
West Ham lost 4-0 at Man United
Watch Final Score at the top of the page
Southampton 2-1 West Ham
The deadly duo of Cedric Soares and Dusan Tadic are at it again.
Southampton break forward and Tadic feeds to his team-mate, before the Portuguese shanks wide.
And now a good chance for West Ham at the other end! Hernandez whips in a cross-shot and Fraser Forster has to really stretch to clear it.
Southampton 2-1 West Ham
Steven Davis' right foot swings the ball into the box and it just clears the head of Maya Yoshida.
Michail Antonio is then caught by Mario Lemina and the West Ham forward looks in a bit of pain.
Mark Noble takes the resulting free-kick on the halfway line as Antonio walks away gingerly.
West Ham really don't need another injury problem.
Text 81111
I think time is running out for Slav. West Ham need a manager with a winning mentality. We have a good squad that needs a strong manager.
Anon
Image source, PASouthampton 2-1 West Ham
Dusan Tadic continues to cause problems on the right for Southampton.
His whipped ball angles across the box and although Gabbiadini is loitering, Joe Hart gets there first.
Southampton 2-1 West Ham
We're back under way.
#bbcfootball
Jay: Arnautovic's sending off was harsh. He can't be penalised if his elbow has a mind of its own.
Yousaf Ali: 's early days yet but things aren't looking good for Bilic. How long will he last with coaches like Tuchel available?
Ryan: Only thing falling faster than @WestHamUtd goal difference is Slaven's chances of being sacked, really worried for this season.
Trevor Sinclair
Ex-England winger on Final Score
West Ham are back in the game but they still need to change things or else they'll concede a few more this afternoon.
It just seems like the discipline within the squad isn't quite right. Arnautovic owes his team-mates an apology.
Image source, AFPSouthampton 2-1 West Ham
Three goals and a red card in 45 minutes.
What more could you want?
Southampton 2-1 West Ham
Nathan Redmond slides the ball into the box but there are no red and white shirts there.
Instead of leaving it for the keeper to pick up, Angelo Ogbonna decides to clear out and concedes a corner.
Luckily for the Hammers it comes to nothing.
Javier Hernandez
Chicarito is off the mark and the Hammers are back in this match!
Michail Antonio wriggles free and has a go from distance. His shot is saved by Fraser Forster but the Saints keeper parries into the path of Javier Hernandez and he taps home from close range.
Image source, AFPSouthampton 2-0 West Ham
As Jose Fonte looks like he's about to clear from just outside his own penalty area, Steven Davis rushes in and gets there first.
The Southampton captain's shot is poor, though. It loops up and wide.
Southampton 2-0 West Ham
Southampton are firmly in control now against 10-man West Ham.
Nathan Redmond lets fly from distance but it's blocked by the Hammers defence.
Saints build up again. Tadic feeds to Cedric Soares on the right before Angelo Ogbonna gets his body in the way.
Corner to the hosts.
Alex Scott
Arsenal Ladies & England right-back on Final Score
Marko Arnautovic's elbow was already up before he started to run, so you can see his intention was there.
The referee has no choice but to give him a straight red card.
Image source, PADusan Tadic
Tadic bangs his spot-kick down the middle and although Joe Hart almost gets his legs to it, it's in the back of the net.
Image source, Getty ImagesSouthampton 1-0 West Ham
An easy one for the referee. Jose Fonte drags down Steven Davis in the box and Saints have a penalty.
Southampton 1-0 West Ham
Oooooh. That is nasty.
Marko Arnautovic gets a straight red for simply ridiculous elbow on Jack Stephens. The West Ham forward just went for him. It seemed completely unprovoked.
What was he thinking?
Image source, PASouthampton 1-0 West Ham
Mark Noble is dispossessed in the centre circle and Southampton steam forward.
Dusan Tadic makes another inviting run up the right but his ball in is once again cleared by the towering Pablo Zabaleta.
Southampton 1-0 West Ham
Mario Lemina's in the wars again. He's just taken a stinging ball to the stomach after it bounced around the edge of the West Ham penalty area.
The former Juventus midfielder is winded but it looks like he'll be OK to carry on...well, once he can breath again.
Image source, ReutersSouthampton 1-0 West Ham
Marko Arnautovic goes down after colliding with Southampton's record signing Mario Lemina as they both went for a header.
Play continues until Mark Noble goes in with a risky challenge on Lemina. That looked nasty - his foot is off the ground.
Referee Lee Mason has a word with a couple of players but no action is taken against either side.
Image source, Reuters#bbcfootball
You lot are cheery today...
Joshua Edwards: West Ham may as well take a ticket for the relegation line and just wait there. Certainly be less embarrassing.
Andy: Over 9hrs without a league goal at St Mary's but only took 10 mins against West Ham. And people say we don't need new defenders
Andrew Priestley: Another conceded low to Hart's left. If he was half as good as he thought he was, he would be twice as good as he actually is.
Image source, Getty Images