T. Thorpe enters the game and replaces Á. Di María.
West Ham have been fantastic in this second half but it seems that the equaliser will elude them today. The Hammers pump the ball into the United box but neither Cole or Sakho can divert it goalwards before Rojo clears. I imagine the United supporters will have no fingernails left after this one.
90' +3
The Old Trafford crowd cheer loudly as Antonio Valencia wins a corner, running the clock down even further. Louis van Gaal uses his final substitution with Tom Thorpe coming on for his United debut, in place of Di Maria.
90' +1
Adrián gets yellow.
Manchester United enjoy a respite from the defensive duties as Tomkins' awkward header is handled by Adrian outside his box. The Hammers goalkeeper picks up a caution and United take their time from the resulting set-piece before keeping the ball in the corner. We have three minutes of stoppage time remaining.
89'
GOAL DISALLOWED FOR WEST HAM! The visiting supporters have their celebrations cut short as the linesman's flag is raised for offside. Jenkinson was the architect as he got forward down the right once again before his teasing cross was poked home by the predatory Nolan, who had just stepped ahead of the last United defender.
88'
Jenkinson has made a good impact down the right for the visitors though Shaw has tracked the Arsenal loanee well, preventing his crosses from getting into the box. West Ham win another corner but Tomkins sends his header wide of the target after beating his marker at the back post.
86'
WASTEFUL FROM VALENCIA! The West Ham forward stands over a free kick from distance with plenty of blue shirts to aim for inside the box. However, the Ecuadorian decides to go for glory and sends his shot over the crossbar. His teammates are not happy with that decision.
84'
MCNAIR TO THE RESCUE! The 19-year-old debutant keeps his side in the lead as he produces a magnificent backwards header to prevent Cole from nodding in Jenkinson's inviting cross. The Hammers are cranking up the pressure.
82'
CHANCE FOR WEST HAM! Enner Valencia scored an explosive effort against Hull and he looks to repeat that feat by cutting inside from the left and letting fly. However, Blind reads the Ecuadorian's intentions excellently and gets a crucial deflection on the ball to guide it behind for a corner.
80'
Cole has given West Ham a more focal point up front and he beats Shaw in the air to knock the ball down for Sakho. However, Rojo is again in the right position to make another important clearance.
79'
STAT: Prior to this match, West Ham had scored nine goals in 18 Premier League games at Old Trafford but never more than one in a single game.
Minute
Description
77'
Van Persie is cutting an isolated figure up front for Manchester United at the moment as they have all remaining nine shirts pegged deep inside their own half. Cresswell again gets forward down the left but he cannot pick out a teammate with his cutback and McNair clears. The hosts are clinging on here.
75'
K. Nolan enters the game and replaces D. Poyet.
Sam Allardyce is up from the bench and urging his players forward in search of an equaliser. Enner Valencia looks to pick out the run of Sakho with an eye-of-the-needle pass but Rojo reads the danger well and makes a crucial interception. Kevin Nolan replaces Diego Poyet for the Hammers.
74'
A. Valencia enters the game and replaces Ander Herrera.
73'
The Manchester United players are screaming for a red card for Sakho after the Senegalese forward trips Herrera to break up a counterattack. However, Lee Mason keeps a cool head and rightfully brings out the yellow card. Herrera has picked up a back injury and it seems unlikely that he will be able to continue.
72'
D. Sakho gets yellow.
71'
CHANCE FOR WEST HAM! McNair has looked composed on his Man United debut and he produces a vital clearance to turn Downing's teasing cross behind for a corner. The former Liverpool winger takes command of the resulting set-piece but Valencia heads over courtesy of a slight deflection off Fletcher.
69'
Di Maria has hardly been involved in this second half and Manchester United have looked laboured in attack. Surely Louis van Gaal's side aren't going to throw away another two-goal lead, are they?
67'
West Ham are now committing more bodies forward and Rafael produces a crucial interception to prevent Song from converting Cresswell's cutback. Carl Jenkinson and Carlton Cole are on for the Hammers.
65'
D. Fletcher enters the game and replaces R. Falcao.
C. Jenkinson enters the game and replaces G. Demel.
Manchester United are looking rattled here and Falcao is sacrificed to make way for Fletcher. The Scot will be tasked with attempting to restore order to the United ranks as West Ham are dictating the midfield battle at the moment.
63'
STAT: That is Wayne Rooney's first red card in the Premier League since he was sent off away at Fulham in March 2009.
62'
West Ham are in the driving seat here and they go close once again as Sakho heads Downing's teasing cross into the side netting. Can the Hammers take advantage of Rooney's red card and grab an equaliser?
61'
C. Cole enters the game and replaces M. Amalfitano.
60'
ROONEY SENT OFF! The Manchester United captain has let his side down here after receiving a straight red card for a malicious swipe on Downing to prevent a West Ham counterattack. Van Persie takes the captain's armband. What was Rooney thinking?
59'
W. Rooney goes off after a red card!
Man United win a succession of corners but both Rooney and Van Persie fail to pick beat the man at the front post. It's not going the host's way at the moment.
57'
Manchester United successfully relieve the pressure on De Gea's goal by enjoying a sustained spell of possession. The Old Trafford faithful are trying to rally their troops but you get the feeling that Louis van Gaal needs to shake things up from the bench.
55'
West Ham continue to threaten and De Gea atones for his earlier error by producing a fine stop to prevent Sakho converting Downing's cross. United are beginning to look vulnerable in defence and Herrera nervously shuffles the resulting corner out of play, gifting possession back to the Hammers.
53'
STAT: Manchester United have taken 31 points from their last 11 Premier League games against West Ham.
52'
GOOD SAVE FROM ADRIAN! Falcao has linked up well with his United teammates today and he unleashes a curling shot from outside of the area which deflects off Poyet before forcing the West Ham goalkeeper into a fine stop at full stretch.
50'
West Ham continue to impress in the early stages of the second half but Amalfitano cannot control Cresswell's long punt forward and United survive. The Hammers are looking the more likely team to score next.
48'
Ander Herrera gets yellow.
Herrera picks up United's first booking of the game for a mistimed challenge on Downing. The Hammers pump the resulting free kick into the box and Reid screams for a penalty when he goes down for having his shirt tugged. However, the referee is not interested and waves play on.
47'
West Ham have made a bright start to the second half with Valencia and Downing stretching the United defence with some clever runs into the channels. Can they find an early equaliser?
46'
The teams re-emerge from the tunnel for the second half, unchanged, with Manchester United getting the ball rolling once again. Can they earn their second win of the season to jump into the Premier League top half?
45' +2
West Ham are finishing the half strongly but Herrera shows his determination to get back and prevent Cresswell delivering a cross from the left. Manchester United were firmly in control of this contest but that Sakho goal has given the Hammers a renewed confidence.
45'
Sakho once again tests the United defence as he gets in behind the two centre-backs to latch onto a long ball over the top. However, the Senegalese cannot add to his earlier strike as McNair races back to divert the ball behind for a corner. From the resulting set-piece, Tomkins sends a header straight into the gloves of De Gea.
43'
Sakho has enjoyed an impressive start to his West Ham career and he launches an attack for the visitors with a lung-busting dribble down the left. However, the Senegalese cannot execute the end product to match as he overruns the ball out of play for a goal kick.
41'
Manchester United have responded well to Sakho's goal and Di Maria switches flanks, this time delivering a teasing cross from the right. Van Persie is ghosting into the box to meet it but Adrian reads the danger well to rush off his line and punch the ball to safety.
39'
Adrian has clearly not learned from De Gea's error as he flaps from Rooney's corner. However, the Hammers goalkeeper breathes a sigh of relief as Falcao steers his header wide of the target.
37'
D. Sakho has scored a goal for West Ham United!
SAKHO PULLS ONE BACK FOR WEST HAM! Manchester United are exposed from a corner as De Gea flaps from Downing's delivery. Demel takes advantage of the Spaniard's poor positioning to power a header against the crossbar and Sakho responds quickest to nod the rebound beyond Van Persie on the line and into the net.
36'
West Ham enjoy a rare attack as a pinball scramble develops inside the United box following a corner. Amalfitano is adamant that he should have a penalty when his flick appears to strike the arm of Falcao - but the referee is not interested and waves play on.
34'
CHANCE FOR MAN UNITED! Van Persie is the architect as he sends Herrera clear down the right with a wonderful reverse pass. The former Athletic Bilbao man picks out Di Maria's run on the edge of the box but the Argentine fluffs his lines and fires wide. That should have been 3-0.
32'
Manchester United have gone a little flat in the past five minutes but West Ham are showing no signs of seizing the initiative. Sam Allardyce's side seem to have already accepted defeat and there is a lack of urgency in attack at the moment, with the midfielders unable to provide quick service to Sakho and Valencia.
30'
The hosts take a breather from their attacking exploits as they enjoy a sustained spell of possession inside their own half. Louis van Gaal will be very pleased with his side's performance so far and the debuts of both Shaw and McNair.
28'
Manchester United are looking to add to their lead but Tomkins produces a crucial header to prevent Falcao from nodding in Rooney's cross from the right. There is a real fluidity and chemistry in the host's attack today.
27'
The Old Trafford faithful are in fine voice as their side have a firm grip on this game after just 27 minutes. However, having surrendered a two-goal lead at Leicester City last weekend, Louis van Gaal's side cannot afford any complacency today.
25'
STAT: West Ham have kept just one clean sheet in their last 18 Premier League matches.
22'
R. van Persie has scored a goal for Manchester United! Assist by R. Falcao.
Valencia and Sakho have shown a good understanding in their early West Ham careers and they combine well down the left-hand side. The Ecuadorian looks to pick out the run of the Senegalese in the middle but Rojo gets across to make a timely challlenge.
VAN PERSIE MAKES IT 2-0! Song has endured a shaky start to this match and he is at fault as he is dispossessed too easily by Herrera inside his own half. Falcao pounces upon the loose ball and threads an incise pass through for Van Persie who waltzes his way past Reid before firing across Adrian and into the far corner.
21'
Rooney is looking to celebrate his 10th Manchester United anniversary in style and he goes close to adding to his tally on two occasions. His first effort from the edge of the box is excellently charged down by Poyet before his second attempt is blocked by another blue shirt.
19'
CHANCE FOR WEST HAM! Demel advances well from right back before swinging a cross towards the back post. Tomkins comes racing in to meet it but he sends his header narrowly wide of the target.
18'
You can sense the trepidation among the United supporters every time that West Ham get close to De Gea's goal. The Spaniard is yet to make a meaningful save however, with both McNair and Shaw looking solid in the early stages of their respective debuts.
17'
Blind has made an assured start in the midfield - one backpass aside - and he picks out Di Maria with an incisive pass into the Hammers box. The Argentine looks to curl a right-footed shot into the top corner but he can only send his effort high over the bar.
15'
West Ham enjoy a sustained spell of possession inside the visitors' half as they look to relieve the pressure on Adrian's goal. The Hammers have won just two matches in their last 21 visits to Old Trafford in the top flight - the other 19 were defeats.
13'
Di Maria has made an excellent start down the left and he bamboozles Demel with his pace and tidy footwork. However, the Argentine cannot produce the cross to match as his delivery goes straight into Adrian's gloves, with Falcao and Van Persie waiting in the middle.
11'
West Ham certainly have a tall side and they look to test the leaky United defence with a long ball into De Gea's box. However, the hosts stand firm and Rojo manages to scramble the ball away from danger.
10'
Manchester United are looking hungry for goals early on and Di Maria marauds down the left before picking out Falcao on the edge of the box who fires an effort wide of Adrian's goal. Can he open his United account today?
9'
This game certainly appears to have more goals in it and Van Persie goes close to getting his name on the scoresheet as he peels away from Cresswell to meet Rooney's cross before heading narrowly wide of the target.
7'
CHANCE FOR WEST HAM! The Hammers nearly find the perfect response as Enner Valencia capitalises upon Blind's poor backpass. However, the Ecuadorian cannot keep his shot down and he wastefully blazes over the crossbar. That was a let off for the hosts.
6'
STAT: That is Wayne Rooney's 12th goal against West Ham in a United shirt and his 209th for the club.
5'
W. Rooney has scored a goal for Manchester United! Assist by Rafael.
ROONEY OPENS THE SCORING! It's the perfect start for Manchester United and it is their captain who has got the goal as he times his run perfectly to meet Rafael's inviting cross before curling a superb first-time finish beyond Adrian's reach and into the far corner.
4'
As you would expect, it is Manchester United who are dictating the play early on, with West Ham happy to sit back and soak up the pressure. With Downing and Amalfitano out wide, complemented by Valencia and Sakho in attack, United will need to be careful on the counterattack.
3'
A. Song gets yellow.
Alex Song has been tasked with the job of stopping Di Maria but he gets too close to the Argentine and this time he does pick up a booking after a needless challenge. The Barcelona loanee will need to be careful now.
2'
FALCAO GOES CLOSE! From the resulting set-piece, Rooney whips in a fantastic delivery which the Colombian flicks narrowly wide of the post. Adrian was getting nowhere near that one.
1'
Lee Mason blows his whistle and West Ham get the game underway. Can the Hammers end their seven-game winless streak against Manchester United at Old Trafford or will Louis van Gaal's Galacticos prove too strong? Let's find out...
Alex Song was terrific against Liverpool last week and he leaves an early mark on Di Maria with a strong mistimed challenge. The Cameroon international can consider himself fortunate not to have picked up a caution there.
Hello and welcome to this live commentary between Manchester United and West Ham. The Red Devils have won seven successive home matches against the Hammers, dating back to May 2007, but Sam Allardyce's side arrive at Old Trafford with an unusual air of confidence due to a good combination of their own impressive form and the host's shaky start to the Louis van Gaal era.
The days of certainties at Old Trafford now seem consigned to the past and it is in fact West Ham who sit the higher of the two sides in the Premier League table having earned seven points from their opening five games in comparison to United's five.
Manchester United will be hoping to bounce back after they surrendered a two-goal lead against Leicester City last weekend to crash to a shock 5-3 defeat. In contrast, West Ham will just want to continue their impressive form after they beat Liverpool 3-1 last time out.
MANCHESTER UNITED TEAM NEWS: Louis van Gaal is suffering from a defensive injury crisis though he is able to hand a debut to England left-back Luke Shaw. With Chris Smalling, Jonny Evans and Phil Jones all sidelined through injury, Paddy McNair is drafted in from the reserve squad to make his first-team bow. Wayne Rooney is again preferred to Juan Mata in the No.10 role, with Radamel Falcao once again supporting Robin Van Persie up front.
WEST HAM TEAM NEWS: Sam Allardyce is forced to make two changes to the side which defeated Liverpool 3-1 last Saturday as Cheikhou Kouyate has been ruled out for six weeks with a groin injury while Mark Noble has failed a late fitness test. Diego Poyet therefore partners captain Alex Song in the midfield while Morgan Amalfitano, who scored for West Bromwich Albion at Old Trafford last season, starts out wide. Enner Valencia continues in attack with Diafra Sakho.
MANCHESTER UNITED (4-3-1-2): De Gea; Rafael, McNair, Rojo, Shaw; Blind, Herrera, Di Maria; Rooney (c); Van Persie, Falcao.
Manchester United subs: Lindegaard, Mata, Januzaj, Fletcher, Valencia, Thorpe, Pereira.
WEST HAM (4-2-2-2): Adrian; Demel, Reid, Tomkins, Cresswell; Poyet, Song (c); Amalfitano, Downing; Sakho, Valencia.
West Ham subs: Jaaskelainen, Nolan, Zarate, Vaz Te, Jenkinson, Collins, Cole.
All eyes will once again be focused on Angel Di Maria today who has enjoyed a promising start to his Man United career, scoring in each of the last two games. Radamel Falcao will be hoping to net his first goal in a United shirt today while Luke Shaw and Paddy McNair will be keen to impress on their debuts. All four players receive a good reception from the Old Trafford crowd as their names are read out over the PA system.
The teams emerge from the tunnel, led out by captains Wayne Rooney and Alex Song. West Ham will kick off proceedings in their alternative light blue kit. Today's referee is Lee Mason, under whom Manchester United have never lost a Premier League game.
HT: Manchester United 2-1 West Ham. Louis van Gaal's side hold a deserved lead at the break thanks to goals from Wayne Rooney and Robin van Persie. The Red Devils dominated the early stages, pegging West Ham deep inside their own half and creating a number of presentable chances. However, David De Gea's sloppy error allowed the Hammers to get back into the game, with Diafra Sakho capping off an impressive half with his fourth goal in a West Ham shirt. It's all set up to be a fascinating second half.
STAT: Robin Van Persie is the second non-British player (after Dwight Yorke) to score 40 Premier League goals for two different clubs (Arsenal and Manchester United).
FT: Manchester United 2-1 West Ham. Louis van Gaal's side earn their second win of the season but only just. Goals from Wayne Rooney and Robin Van Persie gave the Red Devils the perfect start before a David De Gea error allowed Diafra Sakho to pull one back for the Hammers. Sam Allardyce's side were magnificent in the second half but they could not find the equaliser despite Rooney being sent off for a wild swipe on Stewart Downing. West Ham's miserable record at Old Trafford continues.
Manchester United will be looking for successive Premier League wins when they host Everton next Sunday while West Ham will hope to bounce back at home to Queens Park Rangers. That's all we have time for on this this live commentary. Until next time, goodbye.
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