Ibrahimovic scores second from offside position
Mata fired home opener from Rashford pull-back
Feghouli controversially sent off for lunging tackle on Jones
West Ham 0-2 Man Utd
Marcus Rashford or should that be Marcus Rash-Ferrari? His highlights for this match should be shown on Top Gear, not Match of the Day.
The Manchester United man purrs down the left, looks up and finds Ander Herrera, but the Spaniard's volley is kept out well by the diving Darren Randolph.
West Ham 0-2 Man Utd
Edimilson Fernandes comes on to replace Cheikhou Kouyate for the remaining few minutes.
West Ham 0-2 Man Utd
Andy Carroll causing problems for David de Gea again, rising to meet a cross which the Spaniard fumbles.
The ball drops in the box, but a Manchester United player is on hand to hack the ball to safety.
It has been that sort of game for West Ham, hasn't quite fallen in their favour.
West Ham 0-2 Man Utd
Zlatan Ibrahimovic then almost gets his second, but his low shot is saved well by Darren Randolph low to his left.
West Ham 0-2 Man Utd
Clive Allen
Former Spurs & England forward at London Stadium for 5 live
There is a question of Ibrahimovic being offside but he swivels and smashes it into the corner.
Jose Mourinho gets his final substitute ready straight away, he knows this game is over.
Image source, Reuters
Zlatan Ibrahimovic
Points in the bag.
West Ham are architects of their own downfall for this goal. Ander Herrera's shot hits Angelo Ogbonna and the ball pops up to Pedro Obiang, who makes a hash of his clearance.
It drops to Zlatan Ibrahimovic and you cannot give him that amount of space or time in the box, as the Swede ruthlessly dispatches a drilled strike into the net.
He looked offside but Manchester United supporters won't mind.
Image source, ReutersWest Ham 0-1 Man Utd
Almost a calamitous error from Darren Randolph.
Marcus Rashford is looking to get on the scoresheet and strikes an effort straight at Randolph, but the West Ham goalkeeper lets the ball slip out of his grasp and the ball hits the post.
Randolph can turn round and collect though.
Phew.
West Ham 0-1 Man Utd
A painful one for Manuel Lanzini with the West Ham man barged in the back by Antonio Valencia.
The tackle earns Valencia a yellow card.
Image source, ReutersWest Ham 0-1 Man Utd
The points should be in the bag.
Once again Marcus Rashford is involved after being found by Zlatan Ibrahimovic, but Paul Pogba strikes agonisingly wide from the edge of the box from Rashford's cutback.
West Ham 0-1 Man Utd
Clive Allen
Former Spurs & England forward at London Stadium for 5 live
The quicker West Ham have counter attacked, they've just showed signs there could be something at the end of it and with Andy Carroll in there now, they'll have hope.
It doesn't matter how good you are aerially, if the delivery is right and he attacks it like we know he can, he is almost unstoppable.
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Jerry Elumeze: Carroll vs Smalling means the game is not yet won.
Love of football: Smalling on for an attacker with 25 mins to go, that's a bus parking ticket right there.
West Ham 0-1 Man Utd
Manchester United making West Ham do the chasing with time running out.
But the Hammers manage to get the ball back.
The impressive Manuel Lanzini makes his way into the box and plays team-mate Aaron Cresswell on the overlap, but the left-back loses his footing.
West Ham 0-1 Man Utd
Manchester United goalkeeper David de Gea has to sprint off his line to clear a through ball.
The 10 men of West Ham are chasing the game, but find a white wall of United in front of them.
Twenty minutes left.
West Ham 0-1 Man Utd
Here comes the big man.
Andy Carroll, who once gave David de Gea a torrid time, comes on for Dimitri Payet.
West Ham 0-1 Man Utd
Having taken the lead, Manchester United are happy to hog the possession again.
Dimitri Payet gives the ball away to Ander Herrera and then makes no attempt to win it back.
The Spanish midfielder finds Paul Pogba on the edge of the box, but his left-footed shot lacks direction and is scuffed wide of goal.
West Ham 0-1 Man Utd
Clive Allen
Former Spurs & England forward at London Stadium for 5 live
There is where managers earn their corn. Jose Mourinho has made important substitutions and they have combined. Rashford cut it back beautifully, Mata is 12 yards out and his side-foot finish gives the keeper no chance.
As soon as the ball hit the back of the net, Mourinho pointed to Chris Smalling on the touchline. He is on and pushes Michael Carrick back into midfield.
Image source, ReutersWest Ham 0-1 Man Utd
Jose Mourinho's reaction to that goal is to make a change.
Midfielder Henrikh Mkhitaryan comes off and defender Chris Smalling enters the action.
Juan Mata
The substitutes combine.
It is all about Marcus Rashford. The England international is picked out on the left with a raking Phil Jones pass.
Rashford shows he has pace to burn, putting two West Ham defenders on their backsides. He then has the composure to find his team-mate Juan Mata.
The Spaniard lets the ball run onto his left peg, before lashing a finish past the helpless Darern Randolph.
Image source, ReutersWest Ham 0-0 Man Utd
Clive Allen
Former Spurs & England forward at London Stadium for 5 live
Manuel Lanzini's pass was exquisite, he threaded it through and Michail Antonio was one on one. It's a tame finish though. The reshuffle of Man United's defenders, he just crept in behind. What a big chance.
West Ham 0-0 Man Utd
Football writer Jonathan Wilson holds little back on London Stadium...