CHANCE! Young with a cracking delivery but Hernandez somehow can't direct towards goal. Unlucky.
The home side just playing out time now. Cleverley hits one into the ground inside the area.
Buttner receives an earful from a couple of United players as he fires wide.
Valencia has a go from distance but it's high and wide. Wasteful.
Morrison volleys towards goal and wants a handball against Cleverley but the referee is having none of it.
Hernandez looks to respond straight away but Adrian gathers his cross. Morrison wins a free-kick at the other end.
GOAL! Cole breaks the offside trap and slides past De Gea. 3-1 now.
Evra off, Buttner on.
Rooney back defending. He's been brilliant today.
Rooney with the free-kick but Adrian saves.
McCartney's name goes in the book. Horrible challenge.
Collins off, Rat on.
Some of the West Ham fans have seen enough and are making their way towards the exit. No way back now.
GOAL! What a strike from Young. He places it in the top corner after excellent play by Valencia and Rooney.
Carlton Cole on, Jarvis off.
A few of the players are complaining about the ball so the referee has called for a new one.
Young on, Januzaj off.
OFFSIDE GOAL! Valencia with a ball to Hernandez but the flag was up.
Tomkins this time for a really late one on Hernandez.
Morrison picking the ball up in central areas but he isn't receiving it half as much as he or west Ham would like.
Jarvis for a late tackle on Rafael. United on top again.
Taylor off, Collison on.
Cleverley caught in possession but Jones is on hand to win the ball off Diame.
Valencia gets behind the West Ham defence again but his delivery is another weak one.
Januzaj is fouled and Evans is screaming at the referee for a yellow card, I think.
Collins heads back across goal from the corner and Rooney clears. West Ham's best spell of the game.
Demel with a lovely piece of skill. He left Januzaj and Evra for dead and claims a corner.
Valencia with time in the area. His pass is that bad though that he nearly gets on the end of it himself. Hard to explain but almost worked!
Morrison adopts the direct approach but Rafael holds out a leg and somehow emerges with the ball.
Welbeck off, Hernandez on.
Evans stands up well, no way through for Demel this time.
Better from West Ham. Demel breaking forward more now down the right.
Morrison with an excellent ball towards Jarvis but Smalling does really well at full stretch.
United corner from the left and Evan's attempt is deflected just past the post.
CHANCE! What a ball by Januzaj! It just missed Welbeck. West Ham head behind for a corner.
Diame holds Evra off but Jarvis is offside and United claim a free-kick.
Morrison looks like he has been pushed on to support Maiga.
The players are back out for the second half and West Ham get the game going again.
The whistle is blown for the break. United lead West Ham 2-0.
Rooney with a great ball into the box but Cleverley can't quite reach it.
There will be 3 minutes of time to be added on.
Evans is going off with a knock. He should be ok though.
CHANCE! Beautiful play from United. Rafael cuts the ball back but Valencia can't provide the finish the move deserved.
West Ham float another ball into the box but De Gea does really well.
GOAL! Januzaj with a lovely little turn inside the area and he finds the bottom corner. Lovely goal.
PENALTY CLAIM! Januzaj breaks into the box and goes down but the referee waves play away.
Rafael has a go at McCartney but the West Ham defender does well and clears.
Rooney drops deep again but this time his ball is a little long for Evra. Unlucky.
Valencia wasteful again. Cleverley can't keep that one in play.
United have increased the tempo. Rooney more involved. Welbeck's movement starting to cause problems.
Moyes still shouting instructions at his side. He is demanding more.
Adrian could probably have done better but Moyes won't mind.
GOAL! Welbeck fires home after a lovely ball from Rooney. United have the lead.
Noble gets to the ball in midfield but United win it back. Cleverley can break forward and finds Valencia. It's a poor delivery from Valencia though and West Ham have a throw.
Valencia gets frustrated and West Ham win a free-kick in a wide position.
United with plenty of the ball but struggling to create a chance. West Ham look comfortable at the moment.
CHANCE! Taylor with some time and space in the area and his cross towards Noble is just long. Warning for United.
CHANCE! Valencia has a go from a tight angle but Adrian tips behind.
Yellow card for Morrison for a wild one on Cleverley.
Januzaj wins United a free-kick. Taylor broke earlier for West Ham but Jarvis wasn't on the same wavelength.
West Ham more than happy to let United have the ball in deep areas.
Welbeck has a great chance to square to Rooney after Tomkins gave possession away but it's poor from Welbeck and West Ham clear.
Rooney with the free-kick but it's high and over Adrian's bar.
Morrison fouls Rooney on the edge of the area. Big chance for United here.
Jones picks the ball up on halfway, his run is a good one but his shot is saved.
Rooney back defending a West Ham free-kick. West Ham look dangerous at set pieces.
Jones with a weighted ball to Welbeck and then Rooney's delivery is long.
Ben has been in touch via Twitter: "Morrison to come back and haunt united! Half time score will be 1-1! But fancy West Ham to grab a late winner!"
Jones resumes control in the middle and Rafael's long ball to Welbeck is cleared.
West Ham easing their way into the game. Diame with a couple of decent touches.
Spenny has been in touch via Twitter: "I think united will win 2-0 with rooney and welbeck on the score sheet."
I will refer to the home side as 'United' and the away as 'West Ham'
West Ham whip a free-kick in but Evans receives a kick in the back and United claim a free-kick.
Januzaj has a go from distance but his shot is deflected and it's easy for the 'keeper.
West Ham haven't had a touch yet. Maiga is down at the moment.
Januzaj kicks the ball out of play but Moyes will be happy with how his team has started.
CHANCE! West Ham don't clear the corner properly and Cleverley's shot is well saved by Adrian.
Decent start by the home side. Rooney wins United a corner.
The home side it is who get us started and away we go...
Plenty of Santa hats in the crowd today but will the home supporters be going home happy?
If you would like to get involved in this one, you can. Send a Tweet to @FootballMcD on Twitter and I will get as many comments on as possible.
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Manchester United have not lost three successive home league games since Dec 1978 - Feb 1979.
West Ham subs: Jaaskelainen, Rat, Collison, O'Brien, Diarra, J.Cole, C.Cole.
Man United subs: Johnstone, Giggs, Chicharito, Young, Fletcher Kagawa, Büttner.
West Ham starting XI: Adrian, Demel, Tomkins, Collins, McCartney, Noble, Morrison, Taylor, Jarvis, Maiga, Diame.
Manchester United starting XI: De Gea, Rafael, Smalling, Evans, Evra, Valencia, Jones, Cleverley, Januzaj, Welbeck, Rooney.
Team news to follow...
Good afternoon and welcome to live coverage of Manchester United v West Ham from Old Trafford.