Wets Ham win a free-kick around 40 yards out. Snodgrass whips it into the box and an Arsenal head gets to it first. That should be that!
90' +4
Bellerin does brilliantly to slide in and win the ball before Felipe Anderson can control Snodgrass' pass. West Ham are the side asking all of the questions with a minute of added time to go.
90' +3
M. Antonio gets yellow.
Antonio catches Ceballos from behind and is shown a yellow card late on.
90' +2
Lacazette is off target with his effort as Arsenal attempt to seal the win. West Ham are not giving up and they still have three minutes to create one final chance.
90'
R. Snodgrass enters the game and replaces J. Bowen.
Snodgrass is thrown on in place of Bowen as Moyes rolls the dice for one final time.
Five minutes have been added on at the end of the game at Emirates Stadium.
89'
Héctor Bellerín enters the game and replaces M. Özil.
Bellerin is on for Ozil in the last of Arsenal's changes. Arteta is going defensive for the final throes.
88'
Leno gathers the ball to take some of the growing pressure off his side. Arteta is readying another change...
87'
Felipe Anderson enters the game and replaces Pablo Fornals.
Felipe Anderson replaces Fornals for the closing stages. West Ham are running out of time to find an equaliser.
85'
Ngakia sends a cross into the middle and Haller nearly gets on the end of it. He is sandwiched by two Arsenal defenders and cannot quite make the contact he would have liked.
Minute
Description
81'
T. Souček enters the game and replaces M. Noble.
Noble is off and Soucek on as West Ham chase a leveller.
79'
Arsenal have the lead with 10 minutes to go. Now all they have to do is see it through!
78'
A. Lacazette has scored a goal for Arsenal! Assist by M. Özil.
GOAL GIVEN BY VAR!!! ARSENAL 1-0 WEST HAM!!! Lacazette's goal was initially ruled out for offside, but a VAR check shows Ozil was just about onside when cushioning the ball into his team-mate's path to convert.
Ozil watched Aubameyang's deflected shot all the way and had the presence of mind to tee up Lacazette alongside him, rather than attempt to score himself.
76'
SHOT! Haller slips inside the box at the worst possible moment but the ball still finds its way to Fornals. He strikes his shot into the ground and Leno is able to pluck it out of the air.
75'
David Luiz backs into Antonio and the West Ham attacker appears to have hurt his ribs. The home fans are annoyed as play temporarily comes to a halt, but we are now back up and running.
73'
Xhaka is furious with referee Martin Atkinson as he is penalised for a foul on Noble, despite seemingly winning the ball.
69'
R. Nelson enters the game and replaces N. Pépé.
Nelson is on for Pepe as Arteta makes his second change of the so-far goalless contest.
67'
CHANCE! West Ham create a promising opportunity of their own as Bowen bursts through, only to shoot straight at Leno at the end of it. Leno fumbles but Arsenal have players back to clear.
64'
Haller heads the ball on and Ogbonna slips just as he is about to shoot. Arsenal are living dangerously here in what is turning out to be a gripping contest - this one could still go either way.
63'
S. Papastathopoulos gets yellow.
Sokratis bundles into Antonio to earn Arsenal's first yellow card of the match.
59'
A. Lacazette enters the game and replaces E. Nketiah.
Nketiah has found himself in some promising positions today, without being able to put the ball away. The youngster is replaced by Lacazette with an hour played.
Arteta has seen enough - Lacazette has been stripped down ready to come on.
56'
West Ham get the ball forward for pretty much the first time this half, but the attack fizzles out without anything to show for it. Up the other end, Fabianski beats Nketiah to a throughball.
54'
Diop did well to get to the loose ball before Nketiah could pounce from that previous Arsenal chance.
51'
Another deep pass has too much pace on it for Pepe and the winger is unable to keep it in play. West Ham boss Moyes will happily accept another 50 minutes of this.
49'
Pepe's left-footed cross from the right-hand side is just out of Aubameyang's reach. Arsenal are trying to build some momentum in the early stages of the second half.
48'
Saka tries to make something happen by drifting past a couple of opponents. He is reluctant to cross and instead lays it off to Xhaka, who overhits his pass towards the back post.
46'
RESTART! Arsenal get us back under way at Emirates Stadium. Neither side made any changes at the interval, so it is as you were.
45' +2
HALF-TIME: ARSENAL 0-0 WEST HAM
45'
One minute has been added on at the end of the first half at Emirates Stadium.
44'
Cresswell hooks the ball back into the middle and Luiz takes a risk by leaning in to help it behind with his shoulder.
43'
That is now two big opportunities missed by West Ham in this first half, on top of hitting the post. Arsenal boss Arteta will know that a lot more is needed from his side in the second half.
41'
West Ham remind Arsenal that they are not here to sit back on a point as Antonio swings in a dangerous cross from the left. David Luiz takes no risks by heading behind.
40'
Arsenal get the ball forward quickly. Pepe has three players around him yet still manages to squeeze the ball through for Nketiah, whose first-time shot is saved by Fabianski. However, the young striker was offside and the goal would not have stood.
38'
Pepe produces brilliant trickery to get away from Ogbonna, but Rice slides in to halt the winger's run before he can shoot. The subsequent corner comes to little.
36'
Aubameyang's clipped pass has a little too much on it for Nketiah as Fabianski again claims the ball.
35'
Ozil's inswinging corner is plucked out of the air by Fabianski inside the six-yard box. Arsenal come forward again but West Ham are forming a compact shape in their own half.
33'
The home fans are urging their side on. Arsenal have had nearly 78 per cent of the ball, but it has been a pretty balanced match in terms of chances at either end.
31'
SHOT! Fornals' tame shot from outside the box is aimed too close to Leno. West Ham are enjoying a sustained spell of pressure.
30'
Antonio is given space to run into down the left. He takes it past Sokratis but Ceballos gets across to help out his team-mate, albeit at the expense of a corner.
28'
Pepe is starting to get involved down the right. He hangs up a cross towards Nketiah but his team-mate is unable to get on the end of it as West Ham clear.
27'
Arsenal are in control of the game and are creating the odd opening. Moyes will not be too concerned, though, given his side also hit the post early on and squandered an even better chance soon after.
25'
Sokratis should probably have scored with that header from the edge of the six-yard box. Both sides have now hit the frame of the goal in the opening half an hour.
20'
Haller is played through by Noble but Leno gets a touch to the ball before the striker can get a shot away. The referee Martin Atkinson waves away the weak penalty appeals as Noble helps the corner onto the roof of the net.
18'
David Luiz does well to win an aerial ball before Fornals can pounce. Arsenal are still the side on top, though West Ham are threatening on the counter.
16'
West Ham clear their lines after Arsenal win a corner, but this has been a positive spell for the home side. It has been end-to-end stuff at Emirates Stadium so far.
14'
BLOCKED! Ogbonna can only half-clear a cross and Ozil has a chance to shoot from 10 yards. The ball is heading for the target but Diop puts his body in the way to block it.
11'
Saka's cross from the left is headed clear before Nketiah can get on the end of it a few yards out.
10'
David Luiz cuts out Fornals' attempted throughball. Arsenal are seeing a lot more of the ball than West Ham, but the visitors have been more threatening early on.
9'
Pablo Fornals gets yellow.
Fornals is cautioned for a foul on Arsenal winger Pepe.
8'
Ceballos shifts the ball to Xhaka and the Switzerland international thumps a long-range shot into the stand behind the goal. Poor effort!
7'
Former Arsenal goalkeeper Fabianski calmly collects the ball and plays it short as West Ham build another attack. The visitors look full of confidence following last week's win over Southampton.
5'
It has been a sloppy start from Arsenal, with Xhaka giving the ball straight to Bowen for that early chance and Leno hardly covering himself in glory, even if he did just about keep out the effort. Arteta's men need to wake up.
1'
KICK-OFF! West Ham, aiming to make it back-to-back wins to move clear of the relegation zone, get us up and running in London.
After being knocked out of the Europa League by Olympiacos and overcoming Portsmouth for a place in the quarter-finals of the FA Cup, Arsenal turn focus back to the Premier League with this visit of London rivals West Ham. Mikel Arteta's men have won back-to-back top-flight matches but are down in 10th, eight points adrift of the top four with a game in hand to play.
Hello and welcome to our live coverage of the Premier League meeting between Arsenal and West Ham at Emirates Stadium.
Subs: Tomas Soucek, Felipe Anderson, Robert Snodgrass, Fabian Balbuena, Pablo Zabaleta, Manuel Lanzini, Darren Randolph.
WEST HAM XI (4-2-3-1): Lukasz Fabianski; Jeremy Ngakia, Issa Diop, Angelo Ogbonna, Aaron Cresswell; Declan Rice, Mark Noble (c); Jarrod Bowen, Pablo Fornals, Michail Antonio; Sebastien Haller.
Subs: Gabriel Martinelli, Matteo Guendouzi, Alexandre Lacazette, Emiliano Martinez, Reiss Nelson, Joe Willock, Hector Bellerin.
ARSENAL XI (4-2-3-1): Bernd Leno; Sokratis, David Luiz, Pablo Mari, Bukayo Saka; Dani Ceballos, Granit Xhaka; Nicolas Pepe, Mesut Ozil, Pierre-Emerick Aubameyang (c); Eddie Nketiah.
The teams are coming out onto the pitch at Emirates Stadium, with kick-off just moments away.
West Ham ended a seven-game winless league run with a much-needed 3-1 victory at home to Southampton last weekend. David Moyes' side remain in serious relegation trouble, however, as they sit level on points with 18th-placed Bournemouth with 10 games of the season to go.
Despite having nearly 79 per cent of the ball, Arsenal are arguably fortunate to not be a goal behind at the interval. Arteta will not be pleased with his side's performance so far and could well turn to someone like Lacazette or Martinelli at the break. As for opposite number Moyes, he has Lanzini, Snodgrass and Felipe Anderson among his attacking substitutes.
That's all for today's live coverage. Thanks for joining!
This victory lifts Arsenal into ninth place for now, five points adrift of Chelsea in fourth ahead of their rearranged trip to Manchester City on Wednesday. West Ham remain level on points with 18th-placed Bournemouth, meanwhile, with Wolves up next at the London Stadium in eight days' time.
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