F. Balbuena enters the game and replaces M. Antonio.
Antonio, who set the tone with his early strike, leaves the field with 60 seconds to go. Balbuena is on in his place.
90' +3
Ogbonna gets on the end of another ball into the box as Watford's latest attack fizzles out. The hosts are now running down the clock near the corner flag.
90' +1
Five minutes have been added on at the end of this lively match in east London.
90'
Watford have played some nice football in the final third in the second half. Joao Pedro is played in but, like Sarr on the other side a few minutes ago, there is a lack of end product.
89'
End-to-end stuff now as Antonio's shot is blocked at one end and Gray blasts off target at the other.
88'
We are into the final two minutes at the London Stadium. Sarr chests down a long pass and is in down the right but cannot pick out a team-mate with his cross into the middle.
86'
João Pedro enters the game and replaces D. Welbeck.
Joao Pedro is on for Welbeck as Pearson rolls the dice for one final time.
85'
Femenia cuts out Johnson's cross down the West Ham right and the ball goes out for a corner, eating up more precious seconds.
84'
Antonio digs out a cross that is aimed towards nobody in particular. West Ham have lacked an attacking edge in the second half but it does not look as though it will matter - the hard work was done in the opening 45 minutes.
Minute
Description
82'
Sarr has been superb today, even if his side are two goals down. He swings in a fine cross from the right that hits Welbeck and goes over - the forward could not react.
81'
A. Yarmolenko enters the game and replaces J. Bowen.
Bowen, who has dropped off in the second half, makes way for Yarmolenko late on.
80'
West Ham are making it incredibly difficult for Watford to find a way through. The ball does drop to Gray in a promising position inside the box, but Ogbonna is quickly across to block the cross.
78'
Watford are running out of time to salvage a point. They have had 63 per cent of the ball in the second half but have managed just two attempts on target, one of those being Deeney's goal.
76'
It goes without saying the next goal in this game will be massive. West Ham are starting to shift back through the gears and Soucek wastes half a chance by heading over Antonio's outside-of-the-boot cross.
72'
S. Haller enters the game and replaces Pablo Fornals.
N. Chalobah enters the game and replaces A. Doucouré.
Pearson uses the stoppage in play to bring on Chalobah for Doucoure.
West Ham boss Moyes turns to his bench for the first time today, with Haller taking over from Fornals in attack.
71'
Ogbonna and Sarr are having a great battle out there. The West Ham defender does just about enough to ensure his opponent runs out of space to run into. It is time for the second cooling break of the game.
69'
Watford are continuing to boss possession, but unlike in the first 15 minutes of the half they are now creating next to nothing. Rice has a go from around 25 yards and Dawson makes the block with his head.
67'
A. Gray enters the game and replaces T. Deeney.
Watford skipper Deeney is replaced by Gray with around 25 minutes to go. The departing player has been carrying a knee injury of late.
Moyes is holding off from making his first change, despite West Ham being off the pace in this second half. The hosts have done well to take the sting out of the game over the last five or 10 minutes.
64'
Cresswell takes on the free-kick from 25 yards and picks out the top of the Watford wall.
63'
Diop heads another teasing delivery out of play for a corner. West Ham successfully defend the set-piece and Bowen leads the counter, which ends with Femenia stepping across the winger.
61'
Femenia's teasing cross from the left goes straight through the box without a touch. It is one-way traffic now at the London Stadium.
59'
Dawson is playing as a makeshift forward at the moment. He nods down Hughes' floated delivery but it is just out of Deeney's reach and Fabianski gathers.
58'
Fabianski gets a fist to a deep cross into the box. West Ham are penned in at the moment and Moyes may well be tempted to make a first change as we approach the hour mark.
56'
Watford dangerman Sarr drills a cross towards Welbeck but gets far too much on it and Fabianski allows the ball to sail straight behind for a goal-kick.
54'
Sarr is given space to send a cross into the middle. It is half-cleared to Welbeck, who is unable to get a clean shot on goal.
53'
Watford deal with a couple of West Ham corners, with Foster catching the second of them.
52'
The worst thing West Ham can do now is drop deep and invite pressure onto themselves. Watford have momentum on their side and are pressing for a second goal, which really would make things interesting.
49'
T. Deeney has scored a goal for Watford!
GOOOOAAAALLL!!! WEST HAM 3-1 WATFORD!! The visitors have looked a lot better early in the second half and have a route back into the game. Deeney flicks the ball into the feet of Welbeck and Doucoure takes over by taking on Ogbonna and hitting the post with a low curler. Deeney is first to the loose ball and makes no mistake from seven yards.
48'
CLOSE! Kabasele gets his head to Hughes' corner, despite having four or five opposition players around him, but he header drops the wrong side of the post.
47'
Welbeck picks up the ball in the opposition box but is forced wide by Johnson, who has looked solid on his second ever senior appearance.
46'
A. Mariappa enters the game and replaces A. Masina.
Masina seriously struggled in the first half and has been replaced by Mariappa for the start of the second period.
RESTART! West Ham, boasting a three-goal lead from the first half, get us back up and running at the London Stadium.
45' +4
HALF-TIME: WEST HAM 3-0 WATFORD
45' +2
CHANCE! Femenia is played in down the right with a nice pass and sends in a decent cross for Dawson to attack. He is put under pressure by Diop and heads over the crossbar with plenty of the goal to aim for.
45' +1
Rice makes a tactical foul around 40 yards from his own goal. Hughes clips the free-kick into the box and it is a West Ham head that gets to it first.
44'
Watford knock the ball around and Femenia has a go from range, but Soucek shows why he is so valued at both ends of the field by making a block.
43'
As things stand, West Ham are six points clear of the relegation zone with two games to go - and have a vastly superior goal difference on the sides in 18th and 19th. Watford, meanwhile, will remain just three points above the dotted line.
41'
The hosts have scored from all three of their shots on target in the first half, though questions must be asked of Foster and Watford's defenders for all three of those goals.
37'
Foster did not even bother diving to keep out that long-range strike from Rice. He may well have seen the ball late given the number of bodies inside the area.
36'
D. Rice has scored a goal for West Ham United! Assist by M. Noble.
Noble played the ball into the feet of Rice towards the left-hand side and perhaps expected his team-mate to cross it into the middle. Rice had other ideas, though...
GOOOOOOOAAAAALLL!!! WEST HAM 3-0 WATFORD!!! WHAT A HIT! West Ham have a third goal before half-time and it is a cracker from Rice. He takes a touch to set himself and unleashes a 30-yard shot past Foster, who again perhaps could have done better.
35'
W. Hughes gets yellow.
Hughes is the second player to be shown a yellow card for a foul in midfield.
Watford are now up to 53 per cent in terms of possession and have been the better side since the cooling break. The threat of Sarr aside, though, it is difficult to see where a goal is going to come from.
33'
That really was good defending from Ogbonna, not only to keep pace with Sarr but to also make the challenge inside the box - had he got that slightly wrong it would have been a penalty.
32'
GOOD DEFENDING! Sarr uses his pace to get in behind the West Ham defence one again. Ogbonna does well to stick with him and get a touch to the ball before his opponent can shoot.
30'
West Ham work the corner short and Bowen sends in a low cross, which Watford are able to clear.
27'
Kabasele gets in front of Antonio and wins a free-kick for his side. Sarr carries the ball forward, plays it to Masina on the left but the cross into the middle is cut out.
25'
The referee Martin Atkinson calls for the first cooling break of the contest, providing Messrs Moyes and Pearson with a chance to pass on some instructions to their players.
23'
Sarr appears to be Watford's only route through on goal. He has got in behind a couple of times already and tested Fabianski with a low shot. The visitors need to step things up if they are to find the two goals they need.
21'
Masina is penalised for a foul on Bowen high up the pitch. Possession is split near enough right down the middle at the moment but West Ham hold a two-goal advantage.
19'
Moyes' men are no longer looking to force the issue as they were early on. With a two-goal lead, the onus is now on Watford to find a route back into the game.
16'
Fabianski races off his line and clatters into Sarr. It probably would have been a penalty but Sarr was marginally offside when racing through, as confirmed by a quick VAR check.
14'
Femenia is struggling at the moment and that is something West Ham are looking to capitalise on. The home side have raced out of the blocks and are well on course for back-to-back victories.
10'
T. Souček has scored a goal for West Ham United! Assist by J. Bowen.
Soucek's header was impressive and the cross from Bowen was just as good. He played it to the edge of the six-yard box and both Soucek and Antonio were well positioned to pounce.
GOOOOOAAAAALL!!! WEST HAM 2-0 WATFORD!! Soucek doubles the hosts' lead with an impressive header! Bowen's inswinging cross from the right is crying out to be attacked and Soucek does exactly that, the holding midfielder getting between Femenia and Kabasele to head past Foster.
9'
T. Cleverley gets yellow.
Cleverley catches Bowen in the face when attempting to get his foot to the ball, leading to the first booking of the match.
8'
Sarr is looking Watford's most dangerous player, offering an out-ball down the right. Nigel Pearson's men will need to change their gameplan now following that early setback.
6'
M. Antonio has scored a goal for West Ham United!
GOOOOAAAAALLL!!! WEST HAM 1-0 WATFORD!! The home side have started brightly and have an early lead to show for it. Fornals' throughball takes a deflection off Kabasele and that leaves Foster in no man's land. The angle is against Antonio but he slots it through the legs of the Watford keeper, who will not want to see that one back.
5'
Hughes is penalised for a foul on Noble, which he is not too happy about. West Ham are continuing to probe away down both flanks.
4'
West Ham are seeing plenty of the ball early on but are not doing a great deal with it. It looks as though Watford will be happy to sit back and hit their opponents on the counter.
2'
It has been a slow start to the match in east London. Antonio carries the ball to the byline but it runs out of play before he can look up and find a team-mate.
1'
KICK-OFF! Watford get this huge game at the bottom end of the Premier League under way. The relegation picture will look a lot clearer a couple of hours from now.
Hello and welcome to our live text coverage of the Premier League meeting between West Ham and Watford at the London Stadium.
Watford have won back-to-back matches and are three points above the relegation zone, level with West Ham in 16th place. David Moyes' men were 4-0 winners at Norwich City last weekend, relegating their opponents in the process.
WEST HAM XI (4-2-3-1): Lukasz Fabianski; Ben Johnson, Issa Diop, Angelo Ogbonna, Aaron Cresswell; Declan Rice, Tomas Soucek; Jarrod Bowen, Mark Noble (c), Pablo Fornals; Michail Antonio.
Subs: Jack Wilshere, Arthur Masuaku, Conor Coventry, Felipe Anderson, Darren Randolph, Manuel Lanzini, Fabian Balbuena, Sebastien Haller, Andriy Yarmolenko.
Subs: Adrian Mariappa, Roberto Pereyra, Andre Gray, Ignacio Pussetto, Heurelho Gomes, Nathaniel Chalobah, Joao Pedro, Craig Cathcart, Domingos Quina.
WATFORD XI (4-2-3-1): Ben Foster; Kiko Femenia, Christian Kabasele, Craig Dawson, Adam Masina; Tom Cleverley, Will Hughes; Ismaila Sarr, Abdoulaye Doucoure, Danny Welbeck; Troy Deeney (c).
The two sides are making their way onto the field and kick-off is now just moments away. This match will be played behind closed doors, as will every other Premier League game between now and the end of the season.
This result will all but confirm West Ham's place in the Premier League for another season and Moyes will be after more of the same in the second half. With his side requiring at least three goals, Watford boss Pearson may be tempted to turn to Pereyra or Gray at half-time.
That is all for today's live text coverage. Thanks for joining, goodbye!
Moyes' side return to action on Wednesday with a trip to Manchester United, while Watford - three points above the relegation zone with two games to go - host Manchester City the day before.
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