West Ham United 0 Manchester United 2. Rooney double, including a wonder strike, secures points for David Moyes's men.
We will have four minutes of time added on at the end of the half.
Fellaini with a run into the area but he scuffs his shot. Decent run from the Belgian.
Hernandez with a stray one and West Ham claim a goal-kick.
Demel the latest West Ham player to find De Gea from a cross.
Taylor off Nocerino on.
Excellent break from United. Welbeck does superbly down the right and Kagawa's cross is just too high for Hernandez.
Jarvis does deliver in the end and United scramble behind for a corner.
Home fans starting to sound a little frustrated again. Plenty of passing across the pitch and not forward.
The visitors really keeping the ball well now. West Ham can't get a kick.
Rooney and Mata off. Hernandez and Welbeck on.
Carrick sweeping up well again. United then break and Young wins a corner.
Carroll flicks on towards Cole but it bounces behind him. Unlucky.
Jarvis with plenty of time but that is easy for De Gea.
Cole heads down in the area but he lacks support.
Carlton Cole on Nolan off.
Kagawa through to Rooney but he's flagged offside.
Fellaini goes down but that won't be a free-kick.
Young looking lively down the right but Fellaini's pass is intercepted and West Ham attack through Downing.
Buttner has a go from distance but it's high and wide.
Yound with a quick delivery from the right and it's a corner.
Allardyce looking really frustrated with his side.
Rooney making a move wide left. Exchanging passes with Buttner. Kagawa does well too but Tomkins clears.
Young with a ball to Fellaini but he heads over.
Jarvis worked hard to get in a crossing position but his ball was a weak one.
United claim a free-kick when it looked like a West Ham corner off De Gea. Unlucky.
De Gea punches the corner away. West Ham have upped their game again.
Noble delivers from the right and Carrick heads behind excellently.
Fletcher gives the ball away and Jarvis has space to run at the United defence. Fellaini then fouls Taylor.
Jarvis on Diame off.
Collins heads Mata's corner away. Back come United. Young volleys into the ground and Mata's header is deflected wide. Good move.
Kagawa and Mata interchanging whenever possible. United looking dangerous on the counter again. Mata's strike is deflected wide for a corner.
Carroll gets the ball down on the edge of the box but is crowded out quickly.
The atmosphere has gone a little flat. That will certainly please United and David Moyes.
Rooney meets the corner but his header is wide.
Young down the right and wins United a corner. Determined play from the wide man.
Rooney tracks back and gets the better of Collins. Excellent tracking. Young then does well and wins his team a throw.
United with a brief spell of possession inside the West Ham half.
Carroll and Demel's attempts are then blocked from the corner. Pressure on.
Fellaini scoops over from under his own bar.
Would really make for an exciting second period if West Ham can get the next goal. They win another corner.
Downing cuts inside but his attempt is deflected over the bar.
McCartney wins a corner and the home fans cheer their side on once more.
Young with a cross-shot but it's straight at Adrian.
A quick break early on from Rooney down the left and United win a corner.
West Ham get the second half underway.
At half-time it's West Ham 0 Manchester United 2. Rooney double, the first outstanding, gives the visitors a deserved lead at the break.
Mata beats the offside trap and his ball to Rooney looked perfect but Rooney slices the delivery.
We will have two minutes of time added on at the end of the half.
Rooney hits another chance over the bar after excellent work again from Mata and Kagawa.
Young can't keep the latest ball to him in and West Ham have a goal-kick.
Young fouls Tomkins and West ham have a free-kick deep inside their own half.
Carrick beats Nolan to the ball and United have a free-kick. They certainly won't want to concede before the break.
Rooney with the free-kick but it goes over.
Taylor gets a yellow for a trip on Mata.
Downing from the right this time but De Gea claims.
United clear the free-kick eventually but West Ham get a corner.
Fellaini fouls Carroll and West ham have a free-kick in a dangerous position.
McCartney into Carroll territory but he can't reach it.
Collins for a late challenge picks up a yellow.
GOAL! United counter after West Ham appeal for a penalty at the other end. Noble makes a real mess of Young's cross and it hits Rooney and ends up in the bottom corner. 2-0 to David Moyes's side.
Downing does superbly down the left and Rafael concedes the corner.
Kagawa looks for the diagonal towards Fellaini but it's awkward to get back across goal and West Ham clear.
It's been a very open half hour.
CHANCE! United break through Rooney who sets up Mata on the edge of the box but Adrian gets down well.
Taylor with a stray pass and United claim a goal-kick.
Carroll asks for handball in the area but the referee doesn't look impressed.
Buttner concedes a corner. West Ham on top now. Can they make it count?
Downing charging at Rafael but the Brazilian blocks this time.
Diame thought he'd found a way through but ran out of room.
CHANCE! Excellent play from United again. Mata with space and found Kagawa but his strike is straight at Adrian.
Mata seeing plenty of the ball and trying to influence the game whenever possible.
West Ham wasteful in possession again. Groans from the home crowd.
Young does well down the right but his cross is a poor one. Cleared.
Downing with a cross-field ball Demel didn't anticipate the pass.
United popping it around with confidence again. Rafael hits that one out of touch though.
So far so good from United's defensive partnership of Jones and Carrick. Carroll winning plenty of the ball but lacking support.
Rooney with the cut-back but it's behind everyone and West Ham clear.
Downing again down the left but he can't reach the flick on.
Really enjoyable opening seventeen minutes or so.
CHANCE! Downing gets the better of Rafael and Carroll's header bounces once and drops into De Gea's arms.
It's a good free-kick towards Carroll but he can't direct his header at goal.
Rafael with a another foul. This time on Carroll. He'll have to be careful.
Mata with a clever ball over the top but it's just long for Kagawa.
United enjoying a good spell of possession now. West Ham just drifting off the pace slightly.
Noble floats the free-kick in but it's a poor one and Nolan is fouling Young. Free-kick to the visitors.
Yellow card for Rafael for a late challenge on Downing.
CHANCE! Diame's strike is blocked in front of De Gea. Unlucky.
West Ham look to respond straight away and Downing wins a corner.
GOAL! What a goal from Rooney! A dipping effort from just inside West Ham's half. Incredible strike from the England international. Beckham is in the ground somewhere.
Young leads the United counter attack but Kagawa is flagged offside.
Demel reacts quickest from the corner and it's deflected wide.
Downing wins a corner off Young.
Kagawa feeds Mata but his shot is from a tight angle and Adrian does well.
Big Sam has gone for claret socks this evening as well.
Typical that as soon as I say West Ham have settled the quickest United have the best opportunity so far.
CHANCE! Free header for Fellaini but it's cleared off the line by Carroll.
West Ham look to have settled quicker. Young does well down the right but McCartney does well and concedes the corner.
Taylor tackles Buttner, who is making a rare start.
United give the ball away and Downing breaks for West Ham. Both teams getting a couple of early touches.
The visitors get us started...
What an atmosphere at Upton Park the crowd are certainly up for this one. Sure Sam Allardyce didn't need to get his side going.
The players are in the tunnel area and are making their way out...
Allardyce: "We are hopeful that we can give Man United a good game this afternoon."
Sam Allardyce's side lost 3-1 at Old Trafford just before Christmas, while the clubs met twice at Upton Park last season, with both games finishing 2-2.
David Moyes: "Rio Ferdinand has a bad back and because of this I will use a mixture of Carrick and Fellaini in central defence."
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Man United subs: Evra, Lindegaard, Chicharito, Nani, Welbeck, Cleverley, Januzaj.
West Ham subs: Reid, Jarvis, Armero, Jaaskelainen, C.Cole, J.Cole, Nocerino.
Manchester United starting XI: De Gea; Rafael, Jones, Carrick, Buttner; Mata, Fletcher, Fellaini, Young; Kagawa; Rooney.
West Ham United starting XI: Adrian, McCartney, Nolan, Tomkins, Carroll, Taylor, Noble, Collins, Demel, Diame, Downing.
Team news to follow...
Good afternoon and welcome to live coverage of West Ham United v Manchester United from Upton Park.
Kick-off is at 1730 GMT