The referee blows for the end of the game and West Ham have been hit for six by Manchester City who have all but ended the tie with a comprehensive victory.
Kolarov picks up a neat pass from Dzeko and drives the ball towards goal but it's blocked by Johnson.
Nasri goes on a weaving run through the West Ham defence and gets within shooting range but his effort is poor.
GOAL! Dzeko! Lopes plays an exquisite back heel to Kolarov who picks out Dzeko unmarked in the area and dispatches the ball into the net with a left-footed shot.
Diame goes through the back of Kolarov inside the West Ham half.
Kolarov tries to get in on the act with a right-footed shot from outside the area, but it doesn't trouble the Adrian.
Downing sums up West Ham's poor evening with a shocking cross which goes straight out of play.
Demel gives away a free kick for a foul on Kolarov.
Diame loses possession and City start to build up another attack from midfield which slowly takes shape before Dzeko hits a great shot which Adrian does excellently well to keep out.
Negredo finishes his evening of goals with Kolarov coming on in his place.
Downing and Lopes enjoy their own personal battle with the two exchanging possession briefly before Lopes comes away with the ball on the half-way line.
Negredo drives at the heart of the West Ham defence and is allowed to run into the opposition's penalty area but his pass to Dzeko is blocked.
West Ham have a rare breather and Taylor puts in a free kick to Johnson, but he heads the ball straight to Lescott who starts up yet another period of possession for City.
O'Brien makes way for Rat.
Negredo tries a snap shot on the edge of the area but he is way off target with that effort.
Lopes comes on for Silva.
City break into the West Ham box with Negredo trying a left-footed shot which goes out of play.
Dzeko again in the action after Nasri picks him out with an in-swinging cross which the forward powers down towards goal but is well saved by Adrian.
Negredo nearly goes through on goal but Johnson is able to block the forward's shot.
Man City are happy showing off their ball keeping skills at present and that is only interrupted when Dzeko tries a speculative shot at goal.
Demichelis takes the place of Toure.
City are continuing to boss the game as they dictate the tempo.
GOAL! Dzeko! Silva plays in Clichy on the left flank who plays in an excellent cross which is met by Dzeko and tucked away.
Johnson tries to play a long ball into Carlton Cole, but he is adjudged to have been offside when making his run.
Silva whips in the ball from the corner and picks out the head of Dzeko but his effort goes over the bar.
West Ham captain Noble is replaced by Diarra.
Dzeko goes down in the box but the referee waves play on. Dzeko and O'Brien come together with play continuing and have to be separated.
Dzeko tries another long-range effort after the ball breaks to him and his shot goes inches over the bar.
Toure clears the wall but his effort is just over the crossbar.
Demel is penalised for holding on to Negredo on the edge of the box and Toure steps up to take the free-kick.
GOAL! Negredo hat-trick! The forward takes a deflected pass from Silva and bends the ball into the bottom corner past a helpless Adrian.
Nasri plays in a hopeful cross and Demel clears the ball for a corner.
Manchester City start the second half unchanged.
Man City get the second-half underway.
The players have returned. Carlton Cole has replaced Maiga.
Roy says: "" have been a WEST HAM supporter for as long as i can remember this has got to be the worst ref to all concerned at West ham they are all to blame it will not be long at this rate before the local derby will be played at Gillingham."
Chris Green says: "West Ham's defending has been nothing short of abysmal so far! I see City scoring at least two more goals if the Hammers' defensive frailties continue after the interval."
Man City are cruising to victory at the moment. West Ham are really struggling to keep the City attackers quiet as we go into the interval.
Diame comes inside from a wide position and hits a sharp curling effort at goal with Pantilimon initially fumbling the effort, but managing to take it under his control at the second attempt.
West Ham enjoy their best passing spell of the half and they work the ball into a shooting opportunity for DIame, but he has the ball taken from off his toe as he winds up for a shot.
Negredo takes a position on the right wing and hits a wonderful cross to Dzeko who peels off his marker, but his header is saved by Adrian.
City go back to passing their way through West Ham's midfield at will.
GOAL! Toure! Embarks on a powerful run from his own half while evading the West Ham defence before placing his shot past Adrian.
Toure plays in Zabaleta down City's right flank but Noble is able to clear the ball for a corner.
Nasri plays a wonderful one-two with Silva and the Frenchman continues his run into the box, teeing up Dzeko but the forward can't keep his shot down.
Taylor tries a shot from way out and doesn't trouble the Man City goal.
Silva sets up Negredo on the edge of the area but the striker hits his effort wayward.
The West Ham players are just chasing shadows at the moment while City pass their way into attacking chances.
30 minutes in and City have already had four shots on target, while West Ham are yet to trouble the City goal.
Dzeko looks to get in on the act with a long-range effort but he catches the bottom of the ball and his shot sails into the stand.
Cole attempts a cross into the box but the ball floats over the head of Maiga.
GOAL! Negredo! Dzeko plays a great reverse pass into Negredo who rifles the ball into the roof of the net.
Toure cautiously returns to the field.
Nasri starts play up again from the corner but Taylor clears the ball.
Toure looks to be in a bit of trouble after a tackle he made on Diame. Not looking good for him at the moment.
Silva hits a shot on the turn 25-yards from goal and Adrian produces a good save to stop City doubling their lead. The ball eventually makes its way back to Nasri who tries with a shot of his own and the keeper makes another excellent diving save.
Negredo finds space down the right wing and plays in a good cross, but West Ham eventually deal with the threat.
Silva is beginning to pick up the ball in pockets of space between the West Ham midfield and defence and he almost creates another chance, this time for Nasri who has his shot blocked.
Diame has a speculative shot from 30 yards out but his effort fails to trouble Pantilimon who watches the ball roll wide.
Downing plays a one-two with Noble before flighting in a lovely ball which is cleared for another corner by Zabaleta.
West Ham win possession in the City half and Demel goes on to win a corner.
Diame looks to bring the ball into the City half down the wing but he is crowded out by three opposition defenders and the ball goes out of play.
GOAL! Negredo! The ball is perfectly played over the top from Toure who picks out Negredo. The Spaniard dispatches the ball clinically past Adrian.
Pantilimon barely stretches and plucks the ball out of the air from the corner from Downing.
Toure brings down Cole midway in the City half and the ball is played down the wing to Downing who wins a corner.
Silva again looks to play an early through ball to Dzeko but he is adjudged offside.
Silva looks to play a through-ball in between the West Ham defence but its cleared into the stands by Johnson.
Dzeko and Negredo combine well on the half-way line before Silva takes over. Man City are maintaining patience at this stage and are already passing the ball at some pace.
Garcia has a free header from the resulting corner, but he heads his effort just wide.
Silva picks up the ball and runs at pace into the West Ham half before picking out Dzeko on the wing. The striker's shot is deflected out for a corner.
Nasri and Toure play a lovely one-two on the edge of the box and the ball breaks lose to Zabaleta with his attempt deflecting off a couple of West Ham players before Adrian makes a save.
City work possession from a short goal kick and look to get their passing game into full flow on a slick Etihad pitch.
West Ham get us underway and immediately go long looking for Maiga.
Julie Haythorpe from Rainham predicts: "West Ham to win 1-0 and then she wakes up from her nice dream."
Mark says: "I truly belief city will wipe the floor with west ham. Being a forest fan it was great to see them beat big sams team 5-0 but they're poor team made forest look all the better and the quality city have compared to forest is streets apart, it will be a white wash and more than likely the final nail in sams west ham career."
Dave from Canning Town says: "I'm a West Ham fan, I want Sam gone. Gonna go for a 2-2 draw tonight, and to win 2-1 at Upton Park in the return tie. There's to many people writing us off."
Ian says: "Greetings from an exiled blue in Spain. I am hoping its going to be a goal frenzy for the blues tonight, then we can take that advantage with us in the 2nd leg. I am going for a 4-1 victory to city, and hope birthday boy David Silva gets on the scoresheet."
Marc says: "Prediction for tonight - Negredo & 4-0!"
Adam says: "Can't see West Ham holding out for a draw for 90 mins."
Gary from Manchester says: "Can only see one result tonight a big win for city. I'm going for a 4-0 win."
Chris Green: "Will 2014 be the year when City achieve the impossible dream by winning all four trophies?"
Craig Manley says: "3-0 Man City, Negredo will dominate and I can only see one winner, City are too strong, West Ham too weak and I'm a Man Utd fan."
Dan from Molesey says: "Only question tonight is how many. Boys to men. Big Sam doesn't want a relegation on his CV. I think 5 - 0. Dzeko brace!"
Manchester City have fielded a strong side with Pablo Zabaleta, Vincent Kompany, Samir Nasri and Yaya Toure all returning but Joe Hart misses out in goal as Costel Pantilimon continues.
Chris Green from Huddersfield says: "City to win 6-1, with Negredo (2), Dzeko (2), Silva and Kompany registering the goals."
If you want to have your say on tonight's clash then send me an email to: email@example.com and I'll try and get as many comments and predictions on site.
TEAM NEWS Man City: Pantilimon, Zabaleta, Kompany, Lescott, Clichy, Nasri, Yaya Toure, Garcia, Silva, Negredo, Dzeko.
Good evening and welcome to our interactive text commentary on tonight's Capital One Cup semi-final first leg from the Etihad Stadium between Manchester City and West Ham.
Updates will follow here from 1945GMT ...