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- West Ham XI: Adrian, Antonio, Reid, Ogbonna, Cresswell, Noble, Kouyate, Lanzini, Payet, Sakho, Carroll.
- Watford XI: Gomes, Paredes, Prödl, Cathcart, Holebas, Suarez, Behrami, Guedioura, Jurado, Abdi, Amrabat.
Well, that was an eventful game!
Three penalties, a red card, four goals. A West Ham victory!
It's all kicking off here. Nordin Amrabat receives his second yellow of the game for a sliding tackle.
Off he goes in injury time. It's not been Watford's night, really.
Late drama as Troy Deeney's penalty is saved by Adrian!
A THIRD penalty of the game...this time it goes to Watford!
Angelo Ogbonna fells Sebastian Prodl in the area. It seems a little harsh.
Free kick for West Ham about 25-yards out. Dimitri Payet is lining it up.
It bends right across the line of players and comes to nothing for the hosts.
But Victor Moses comes racing into the box, with the ball seemingly stuck to his feet, and just pokes wide.
West Ham aren't settling for three!
Andy Carroll gets a standing ovation as he's replaced by Emmanuel Emenike.
The England boy done good here tonight.
You sense there's still more goals to come in the last 10 minutes.
Manuel Lanzini has so much room as he strides forward into the penalty area. The West Ham midfielder dinks the ball and it looks like it bobbles before going over the bar.
A brilliant save from Heurelho Gomes!
The Watford keeper stands tall and strong and powers away Victor Moses' close-range effort.
That must have stung his hands a bit...
Another little trip from Jose Holebas, this time on Victor Moses, sees West Ham earn a free-kick out wide.
Dimitri Payet aims for Andy Carroll's head but he can't get to it.
Payet tries to drive the ball across the box again but it's cleared.
Iketchi Anya is causing some trouble for West Ham.
The Watford substitute finds himself unmarked on the left and he lets fly, but there's no one to meet his cross.
Andy Carroll continues to make a menace of himself up front. The West Ham striker rushes forward and tries to muscle past two Watford defenders but he fails to make the breakthrough.
Hammers goalkeeper Adrian is sent into action now, as Ikechi Anya attempts to latch onto a speculative ball in the box.
Big Troy Deeney is now on for the visitors.
West Ham also make a change - Diafra Sakho is off, and Victor Moses is on. Sakho looked really bright for the Hammers tonight.
West Ham are still on the prowl. They want another goal.
Mark Noble tries to feed an on-rushing Dimitri Payet, but Juan Paredes gets his body in the way.
A third yellow card for Watford now, as Nordin Amrabat brings down Michail Antonio.
Watford midfielder Mario Suarez is cautioned for a foul on Manuel Lanzini.
And it looks like Troy Deeney is warming up for the visitors.
The tempo has died down a bit now.
Both managers wait nervously on the edge of their technical areas. When I say the edge, they're actually loitering well over the line.
Two quick corners for West Ham shows they're still hungry for goals.
Winston Reid tries to volley past Heurelho Gomes but it goes wide. Another corner.
Andy Carroll, who's recovered from his knock, gets his head on it but it's saved.
Now Watford go on the break and Steven Berghuis has a go from distance. It goes wide.
End to end at the moment!
A beauty from the big Watford defender!
Sebastian Prodl hooks the ball home from inside the area after a Steve Berghuis free-kick.
Do we have a comeback on our hands?
Dun..dun...dunnnnnnnn. Cue Dramatic music (in my head, at least) as Andy Carroll goes down injured for West Ham.
A momentary scare, it seems, as the big man is up and about again.
Nordid Amrabat is twisting, turning, pirouetting and dancing - basically trying to do anything to get past the West Ham defence - but it's just not working for the lone Watford forward.
Yep, two against West Brom (both saved) and two tonight. Madness!
All hands on deck for Watford now.
A double substitution sees Ikechi Anya & Steven Berghuis on for Adlene Guedioura & Jurado, who's probably been the visitors' best player.
Another one for the Hammers captain! Straight down the middle.
It was a silly one to concede for Almen Abdi. He tugged Michail Antonio's shirt.
And what we've failed to tell you was Abdi missed a glorious chance up the other end just before giving away the spot-kick.
He's had a tough few minutes, has the Watford wide man.
West Ham love a penalty at the moment...
Michail Antonio is brought down by Almen Abdi.
Watford continue to play a nice-looking possession game but they're not doing much with it.
On the flipside, West Ham look great on the attack.
Manuel Lanzini takes on three defenders and is eventually scuppered inside the box and the Watford defence clear the danger.
Sebastian Prodl is now looking in a bit of pain, so we could see a change for the visitors.
We're off and OH MY...we nearly have an early goal!
A long ball forward falls to Diafra Sakho and he tries to turn the ball home but it trickles out. Great start for West Ham.
Wakey, wakey Watford.
The players are meandering back out for the second half.
Some interest possession stats to show you from the first half. Watford hold the numbers...
So Andy Carroll has six in six for West Ham. Should he be in the England squad?
Get involved on Twitter via #bbcfootball.
Former England and Everton midfielder Peter Reid on BBC Radio 5 live: "England are in a good position with attacking players. I know he is a different option but they are going to take Wayne Rooney, Jamie Vardy, Harry Kane and Danny Welbeck - I'd go with that."
Good news, Alan Shearer fans. The Geordie rascal is staying with Match of the Day.
The former England captain is to remain as a pundit after signing a new deal until 2020.
He said: "I'm loving my broadcasting work with the BBC and I'm excited to continue my role working across its wide range of football coverage."
Leicester keeper Mark Schwarzer on BBC Radio 5 live: "My first impression was that it was definitely a penalty. He was all over him and the referee was right to give a penalty.
"It was a very good penalty by Mark Noble. West Ham are cruising and should be up by more. Watford have been pretty disappointing and are definitely looking forward to the FA Cup semi-final at the weekend."
That's 45 minutes up. A very decent half for the hosts.
So close to being three! Manuel Lanzini puts his side-footed effort just wide.
West Ham firmly in control now.
Easy does it from the West Ham captain! Cool as you like.
Penalty West Ham!
Jose Holebas bundles over Diafra Sakho.
Will Heurelho Gomes be the saviour again for Watford?
Very nearly a second for West Ham.
Diafra Sakho is supplied by Andy Carroll and he tries to stroke to ball home from inside the area, but Heurelho Gomes manages to get a hand to it.
Good job, as Chiek Kouyate was loitering as well.
Almen Abdi strides forward for Watford before Michail Antonio makes an impressive tackle to clear the danger.
And there's a lovely, lovely moment as the entire stadium rise to their feet and clap in remembrance of former Hammer Dylan Tombides, who passed away two years ago.
Dimitri Payet is provided with a beautiful ball from Andy Carroll - it arches from one side of the pitch to the other.
Payet tries to lash home with some power, but his effort goes over.
Adlene Guedioura swipes the ball across the box from the right but he can't find any Watford team mates.
Nordin Amrabat then has a go from 25 yards out but his low drive is held by West Ham keeper Adrian.