G. Diangana enters the game and replaces Felipe Anderson.
Pellegrini's third and final change is the introduction of Diangana for his Premier League debut, fresh from scoring a brace in the drubbing of Macclesfield. Felipe Anderson is the player who makes way.
90' +1
The fourth official has signalled four minutes of additional time.
89'
It is a pity that a lot of the discussions after the game will be about Man United's struggles and the pressure on Mourinho, rather than crediting West Ham for what has been an impressive performance.
87'
Man United win a free-kick in a central position following a foul from Snodgrass but it is a long way out. Rashford still strikes at goal but his attempt clatters against the wall and loops up into the air before being collected by Fabianski.
85'
Lukaku is flagged offside after receiving a pass from Fellaini and he is another player who has been really disappointing in the game.
83'
M. Antonio enters the game and replaces M. Arnautović.
Pellegrini makes another change for West Ham as Arnautovic leaves the field to a standing ovation and is replaced by Antonio.
82'
SAVE! McTominay strikes at goal from long range and his driven attempt requires a diving save from Fabianski to keep the ball out, with the resulting corner coming to nothing.
78'
A. Young gets yellow.
The first yellow card of the game is issued to Young after he fouls Felipe Anderson.
76'
A superb response from West Ham as they could have found themselves under significant pressure following Rashford's goal but it seems to be merely a consolation now.
Minute
Description
74'
M. Arnautović has scored a goal for West Ham United! Assist by M. Noble.
GOAL! 3-1! Arnautovic has surely sealed it! Noble tees a ball through Man United's gaping back line and Arnautovic has acres of room, easily slotting the ball past De Gea.
Noble has been a rock in midfield and has popped up everywhere, earning an assist to cap off a fantastic individual performance.
72'
R. Snodgrass enters the game and replaces A. Yarmolenko.
West Ham make their first change of the game, replacing Yarmolenko with Snodgrass.
71'
Mata enters the game and replaces A. Martial.
M. Rashford has scored a goal for Manchester United! Assist by L. Shaw.
The third and final change for Man United is the introduction of Mata in place of Martial.
Mourinho's side have been poor from set-pieces during the game but Shaw's delivery this time was enough to break through West Ham's resilient defensive line.
GOAL! 2-1! Rashford flicks Shaw's corner on at the near post to beat Fabianski, giving the Red Devils hope of a late turnaround.
70'
Fred enters the game and replaces P. Pogba.
Double change for Man United, with Pogba replaced by Fred.
68'
CLOSE! West Ham threaten with Felipe Anderson, who teases a pass into the area ahead of Arnautovic but he cannot latch onto the end of it.
67'
Young's deliver is lofted into the six-yard box but West Ham clear their lines, initially showing threat on the counter before being quelled by Mourinho's defensive line.
66'
Man United have looked a lot more dangerous since the introduction of Rashford, who has won a free-kick in a wide position after a foul from Masuaku.
64'
OFF THE LINE! Young curls a cross into Fellaini in the middle and he rises highest to head an effort at goal, which is kept out by a superb save from Fabianski to claw the ball off the line.
62'
Arnautovic is down after a strong challenge from Smalling and requires treatment, which is a concern to West Ham has he has only just returned from injury.
60'
Man United have dominated the possession since the restart but Fabianski has still had very little to do, although he did just warm his gloves by catching an easy header from Pogba.
58'
Bright play from Martial on the left as he beats his markers to push into the area but his delivery takes a deflection and loops up into the air, erasing any danger, and West Ham get the ball away.
57'
M. Rashford enters the game and replaces V. Lindelöf.
Confirmation of Rashford's introduction, who takes the place of Lindelof in a change that will lead to a shake-up in Man United's shape.
55'
Changes look to be on the horizon for Man United as Rashford is getting stripped and ready on the sidelines. It will be interesting to see who he replaces.
53'
Man United continue to try to find a way back into the match as Fellaini turns after receiving a throw from Young and immediately hits a ball which flies way wide of Fabianski's net. I still cannot recall him being called into action.
51'
A woeful delivery from Young sees the full-back hand the ball straight to Noble on the edge of the area and the Hammers immediately hit on the counter, where Arnautovic fires a half volley way over De Gea's head.
50'
Young has had limited opportunities on the ball since his darting runs down the right in the early stages of the first period but wins Man United a corner following a challenge from Balbuena.
48'
Pogba is penalised for a foul on Yarmolenko, which Felipe Anderson to curl a free-kick into the area but the hosts fail to take advantage as the move ends with Noble firing a poor attempt at goal from outside the box that De Gea collects easily.
46'
West Ham get the action back underway for the second half.
45'
HALF-TIME: WEST HAM 2-0 MANCHESTER UNITED
43'
V. Lindelöf is unfortunate, scores an own goal!
GOAL! 2-0! The Hammers' double their advantage! Man United failed to clear their lines and Yarmolenko picks the ball up at the far post, cutting back inside and seeing his effort take a huge deflection off Lindelof that leaves De Gea helpless.
41'
Obiang tries to test De Gea from distance but fires his effort straight over the top of the goal without causing any problems.
39'
A succession of corners for the Red Devils comes to nothing and United will need to have a rethink at the interval if they are to break down West Ham.
37'
Mourinho's side continue to pile the pressure upon their hosts but remain unable to craft clear-cut opportunities.
35'
Pellegrini's side do not look convincing as they look to maintain their narrow advantage but there is plenty of movement in their front three, with Yarmolenko, Felipe Anderson and Arnautovic constantly changing their position on the field.
33'
The Hammers have not really created too much despite their goal and Arnautovic, back in the side after missing the draw with Chelsea last week, has barely had a sniff.
31'
West Ham have their backs against the wall as Man United continue to pile the pressure on but Fabianski is yet to be tested by the visitors.
27'
Balbuena slips inside the area and Lukaku pounces on the loose ball but cannot convert, before flicking a poor cross into the arms of Fabianski.
25'
West Ham are finding themselves under consistent pressure now and Masuaku is getting no help tracking Young from Felipe Anderson in front of him. At the moment, it is that side where the Red Devils look the most dangerous.
23'
OFF THE POST! Young has been United's best player so far and he plays another fine ball into the area, where Lukaku meets the delivery at the near post but his header strikes the frame of the goal.
21'
Young again finds room on the right to play a ball into the middle but Lukaku is flagged offside and his shot was blocked by Balbuena anyway.
19'
Lukaku has seen very little of the ball and Martial has not impressed in the few touches he has had in possession. It has been a dreadful start for the visitors.
17'
West Ham are dominating the midfield battle at the moment and Man United are struggling to impose themselves in the match.
15'
Mourinho may have a case to argue that Zabaleta was slightly offside for the goal but it is a very tight call and does not excuse his side's poor defending.
13'
The hosts are already finding plenty of joy in the wide positions as both Felipe Anderson and Yarmolenko have found room to work with as Shaw and Young have been bombing forward.
11'
Young curls an inviting cross into the middle where Martial heads wide of the target but the offside flag is raised against the France international.
9'
West Ham have come out of the blocks firing and United have struggled to establish themselves in the match, with their changed formation far from convincing in the early exchanges.
5'
Felipe Anderson has scored a goal for West Ham United! Assist by P. Zabaleta.
Brilliant play from Zabaleta, who found plenty of room to work with pushing forward and put the ball on a plate for Felipe Anderson.
GOAL! 1-0 West Ham! It has been a strong start for the Hammers and they take the lead as Noble feeds Zabaleta down the right, who then plays a low pass into the middle where Felipe Anderson flicks home for his first goal for the club.
4'
Mourinho's side have shifted into a back three formation with McTominay slotting in alongside Lindelof and Smalling, with Fellaini and Matic continuing in their more familiar midfield roles with Young and Shaw as wing-backs.
2'
West Ham win an early corner and Balbuena rises to meet Felipe Anderson's cross but cannot direct an effort on target.
1'
We are underway at the London Stadium, where Man United commence the action.
Hello and welcome to our LIVE coverage of the Premier League clash between West Ham and Manchester United, where the visitors are looking to bounce back after a difficult week.
West Ham XI (4-1-4-1): Lukasz Fabianski; Pablo Zabaleta, Fabian Balbuena, Issa Diop, Arthur Masuaku; Declan Rice; Andriy Yarmolenko, Mark Noble, Pedro Obiang, Felipe Anderson; Marko Arnautovic.
Man United XI (4-3-1-2): David de Gea; Ashley Young, Chris Smalling, Victor Lindelof, Luke Shaw; Scott McTominay, Nemanja Matic, Maroaune Fellaini; Paul Pogba; Romelu Lukaku, Anthony Martial.
West Ham subs: Adrian, Lucas Perez, Angelo Ogbonna, Grady Diangana, Ryan Fredericks, Michail Antonio, Robert Snodgrass.
Man United subs: Lee Grant, Eric Bailly, Marcus Rashford, Fred, Ander Herrera, Matteo Darmian, Juan Mata.
West Ham return to a more familiar side after their mauling of Macclesfield, with Manuel Pellegrini making just one change to the side that drew with Chelsea in the league last weekend. Arnautovic returns from injury to take the place of Antonio while Grady Diangana, who scored a brace in midweek, earns a spot on the bench.
West Ham have improved significantly in recent weeks by beating Everton and holding Chelsea to a goalless draw in their last two league matches, while they enter this game after hitting eight past Macclesfield in a midweek EFL Cup tie.
Meanwhile, Jose Mourinho's side dropped points at home to Wolves last weekend and then suffered an exit from the EFL Cup at the hands of Frank Lampard's Derby County, with the result followed by a viral video of the Portuguese boss clashing with Paul Pogba in training - though he played down the incident.
Mourinho also shuffles his pack following the EFL Cup clash and makes four changes to the team that drew 1-1 with Wolves last weekend. Young, Matic, Martial and McTominay come into the side, with Fred dropping to the bench. Antonio Valencia, Jesse Lingard and Alexis Sanchez all fail to make the squad.
A fantastic first half from West Ham, who have a two-goal cushion following goals early and late in the first period. Manchester United's defence has been woeful and the Hammers' front three are impressing as a result, although the hosts' defence has looked shaky.
West Ham will need to improve at the back if they are to keep Manchester United out in the second period, while Mourinho may look to shift back into a four-man defence as his changes for the game have backfired. It does look ominous for the Portuguese boss though who, as it stands, is heading towards three games without a win.
A tremendous victory for West Ham extends their unbeaten run to four matches across all competitions, while heaping the pressure upon a Manchester United side who could fall 11 points behind Liverpool if the Reds beat Chelsea in the late fixture. The Hammers deserve their win after an impressive performance by their front three.
Thanks for joining our coverage today. Until next time, goodbye.
Pellegrini's side will look to maintain their unbeaten streak next Friday against Bournemouth, while Mourinho's men will look to avoid making it four matches without a win when they host Valencia in the Champions League on Tuesday before tackling Newcastle next weekend.
Commentary
More…