Last Updated: 20/12/14 5:06pm
Full-time. West Ham run out comfortable 2-0 winners here. Leicester might have made a game of it if they had been able to convert one of the chances they created towards the end but the results was never in doubt. Thanks for joining us.
Save! Ulloa has his near-post header superbly saved by Adrian. Leicester knocking of the door but is it too little too late?
What a save! Leicester finally create a chance and Mahrez delivers a great ball into the centre of the box for Nugent who volleys powerfully straight at Adrian who blocks the shot.
Valencia uses his freshness and pace to spring a rapid counter on Leicester. The break doesn't create a chance as such but the Ecuadorian wins a corner with, if anything, only tires the visitors.
Leicester have been unable to create anything since bringing Ulloa and Nugent on and time is running out for them now, with West Ham comfortable to hold the ball and low the game down they get possession.
Song tries to release Valencia down the left with a looping pass wide on the left but the ball is played back to Hamer who does well to clear up-field for Leicester.
West Ham win a corner which is directed towards Carroll. He can't get on he end of it and the ball skids off the top of a Leicester defender and out for a throw.
It's now or never for Leicester if they are to have any chance of getting back into this game, but as of yet they've been unable to muster anything other than a half chance. There is still time though.
Chance! David Nugent spurns a great opportunity for the visitors. After dancing his way towards the West Ham area, he sells substitute Collins a dummy and, with the target opened in front of send, send s a shot high into the stands.
The 'Ole's' are ringing out around Upton Park as West Ham enjoy a spell of controlled possession, largely orchestrated by Alex Song in the centre of midfield, much to the pleasure of Big Sam and the home support.
Sliced clearance by Andy King gifts West Ham a corner but the Hammers waste the set-play and Leicester clear.
A real broken game here as neither side are able to string more than a couple of passes together before either losing it or being fouled.
West Ham get their wires crossed down the right and Leicester take the opportunity to clear, which they gratefully accept.
Song aimlessly wastes a free kick for West Ham, before Mahrez appeals for a free-kick up the other end of the pitch by referee Atkinson tells him to get up.
Triple change for Leicester as Cambiasso is replaced by Ulloa, Konchesky by Knockaert and Vardy for Nugent.
Panic in the West Ham area as the ball bounces around with neither attackers nor defenders able to connect with any purpose. Eventually Reid collects and clears his lines.
Goal! Downing doubles West Ham's lead with a wonderful curled effort beyond Hamer. After collecting from Sakho's knock-down, the winger controls and gets a fine shot away for his fourth league goal of the season, finishing across the keeper into the far left-hand corner, 2-0.
Songs is adjudged to have fouled Vardy and Leicester have the chance to head up field and relieve some pressure. Schlupp has a great chance from the resulting free-kick but both Reid and Tomkins block and the chance goes.
Morgan plays himself into with one too many touches at the back. Carroll races after the defenders pass and, after jarring his leg on the turf, clatters into the advertising hoarding and cameramen on the touchline. The striker appears to be fine and after receiving treatment plays on. Nasty looking incident all round though.
Just taking a while to get going here at Upton Park as both sides break up play or give away niggling fouls. West Ham pump the ball into the Leicester area from inside either own half where Carroll attempts an audacious bicycle kick which goes wide.
Half time. Martin Atkinson calls time on the opening period here at Upton Park. West Ham lead 1-0 thanks to Andy Carroll's opportunism and deft finish over Ben Hamer in the Leicester goal, all after Paul Konchesky's horrid back pass. Leicester have played well but have failed to create any real chances other than Riyhad Mahrez's left-footed drive.
West Ham really trying to get the second before the break and put the visitors under a prolonged spell of pressure. The two corners for the hosts, however, are dealt with well by Leicester.
A bit on head-tennis around the half way line between both sets of players end with Sakho being free down the left channel. With Carroll heading into the box for support, the Senegalese striker cannot find his partner as Morgan sees the ball out for a goal-kick.
Wasilewski blocks Carroll's attempt from the resulting free kick before Leicester clear the following corner at the near post.
Just moments after the restart Vardy puts an even stronger challenge in on Song and is booked for his troubles.
Alex Song pulls up after a challenge from Vardy. Leicester refuse to put the ball out of play so he can receive treatment and Mahrez wastes the opportunity to play in Konchesky and West Ham collect possession. Play pauses while Song hobbles off the pitch to get treatment on what appears to be an ankle injury.
Kouyate breaks through on goal but is adjudged to have handled the ball and Leicester win a free kick in their own box.
Save! Mahrez collects the ball off Vardy, who's relentless closing down pays dividends after closing Tomkins down. The Algerian left-footed shot takes a nick off a defender and Adrian tips over for a corner.
Leicester almost commit an identical error to the one which saw Carroll open the scoring. This time Morgan opts to chip the ball back to Hamer rather than along the ground and, after being pressured by Sakho, the stand-in keeper does really well to clear his lines.
The intensity of the game has just taken a dip here with both teams enjoying a spell of possession, Mahrez appeals for a foul on the edge of the West Ham area, after a coming together with Reid, but the referee waves the claims away and the ball is cleared by Tomkins.
Leicester have been clearly rocked by conceding the goal, but credit to them as they persist in trying to impose their passing game on proceedings.
Goal! Carroll atones for his miss by capitalising on Konchesky's blind pass back to his keeper. After racing away from Morgan, he lifts the ball exquisitely over Hamer, 1-0.
What a miss! West Ham engineer a great opportunity where Downing cuts the ball back to Carroll who skies over from six-yards out.
Goal-mouth scramble as a chipped West Ham corner causes havoc among the Leicester ranks. Sakho collects after Carroll's knock-down and lays the ball on for Song. The Cameroonian's shot is blocked before two Hammers players are flagged for offside.
Leicester lose possession around West Ham's area and Sakho breaks at pace before Drinkwater chops him down just over the halfway line.
West Ham are just trying a little too hard here. One too many Hollywood passes, particularly from downing, which are not quite coming off.
Jenkinson's punt up field sends Carroll in pursuit of the ball but Hamer, who is filling in for the injured Schmeichel in goal, duly collects.
West Ham try to apply a bit of pressure on Leicester but fall short with a poor set-piece from the left. Leicester win the ball back and give straight back to West Ham as both teams try to settle into a rhythm.
Leicester are trying to make the game compact and have penned West Ham in their half for a couple of minutes with the Hammers only able to clear for throw-ins for the visitors.
Vardy has some joy down the right, after evading Reid he flashes the ball across West Ham's six-yard box where Schlupp is unable to get on the end of it. Leicester are retaining the ball far better than West Ham and arguably have made the better start. They just need something to show for it.
Carroll clears Cambiasso's corner as Wes Morgan tries to connect with it. West Ham break down the right but both sides are unable to retain possession.
Chance! Nolan plays Sakho in on the edge of the box and the striker takes one touch before unleashing a volley which goes wide of the right-hand post. Instinctive turn and shot but just off wide his accuracy.
A couple of corners won by West Ham, with Carroll involved on both occasions. Vardy finds himself marking the former England striker for the former, in a complete mismatch but Reid was adjudged to have fouled after Carroll's knock down and Leicester clear their lines.
Even start here as both sides enjoy spells of possession.Song breaks up play and West Ham go forward Kouyate floats a high ball to the back post where Carroll challenges. West Ham making their intentions clear from the offset.
The players are out of the tunnel and te famous West Ham anthem rings out across Upton Park. Kick-off is just moments away.
A little over five minutes to go here in east London, can West Ham's relentless march up the table continue? Will Leicester be able to cope with Carroll and Sakho, and the Valencia? Can Nigel Pearson's side ease some of the pressure or will they be condemned to the bottom at Christmas?
Fancy a bet on today's game? Sky Bet consider this one a home banker for West Ham, making them 4/6 favourites to collect all three points. It's unlikely there will be many backing Leicester even at odds of around 4/1 at Upton park. The Foxes have lost their last two games by one goal and it's 11/4 for that trend to continue on Saturday. Carroll and Sakho are considered joint favourites in the goalscorer markets at 4/1 apiece to net first, while David Nugent, Jamie Vardy and Leonardo Ulloa are rated the visitors' biggest threats, each at 8/1.
Leicester, by contrast, are desperate for a result of any kind this afternoon. The Foxes haven't won in their last 10, losing eight and drawing two. Their recent form against today's opponents doesn't bode well either, Nigel Pearson's side are without a win against West Ham in their last six meetings. Can they stop the rot, and relieve some of the pressure on Pearson?
So here at Upton Park, West Ham look to continue their fine league form which has seen Sam Allardyce's side lose just once in their last 10 Premier League games, winning five of the last six. Last week the Hammers could only manage a draw at Sunderland, but three points today could all-but guarantee they occupy one of the top-four spaces on Christmas day.
Leicester City Team News: Nigel Pearson names the same team to the one which lost 1-0 to the Man City last week. Jamie Vardy looks set to lead the line this afternoon while top-scorer Leonardo Ulloa remains on the bench.
West Ham Team News: Mark Noble remains injured, so the Hammers are unchanged from the side that drew at Sunderland last week. Andy Carroll and Diafra Sakho are paired together up front at Upton Park for the first time, while Enner Valencia remains on the bench.
West Ham XI: Adrian, Jenkinson, Tomkins, Reid, Cresswell, Nolan, Song, Kouyate, Downing, Sakho, Carroll.
Leicester XI: Hamer, Simpson, Wasilewski, Morgan, Konchesky, Mahrez, King, Cambiasso, Drinkwater, Schlupp, Vardy.