Another Chelsea corner! It's now or never time as Fabregas delivers, with his ball finding Pedro at the opposite side of the box but he strikes an effort way off target.
90' +2
West Ham defending with their lives as Arnautovic deflects Willian's cross behind for a corner. The Brazilian delivers, Evra heads away but the ball is going to come straight back at the Hammers defence. Thankfully, Cahill's header is easily gathered by Hart.
90' +1
FIVE minutes of added time!
90'
West Ham just minutes away from what could be an incredibly valuable point. As it stands, they'll be six-points clear of third-bottom Southampton. It's not enough to get them over the line, particularly with a huge clash against Stoke next Monday, but it will provide a massive boost.
89'
Hart has saved West Ham twice in this second half and also had that huge save in the first period, although Chelsea scored from the resulting corner. He'll be hoping Gareth Southgate is watching!
88'
SAVE! Joe Hart is having his best game in years! Giroud rises high in the area and heads towards the bottom corner, only to be prevented by Hart who dives and touches the ball onto the post.
86'
HUGE CALL! Arnautovic skips past the Chelsea defence and into the area, where his surging run forward is brought to a halt by Kante's lunging tackle. The Austrian is convinced it's a penalty but he got a huge touch to the ball. A superb tackle!
85'
J. Cullen enters the game and replaces João Mário.
Third and final change for West Ham, with Josh Cullen introduced in place of Inter Milan loanee Joao Mario.
84'
The game is really stretched and wide open, it's end-to-end now. It would take a brave man to predict a winner!
83'
Hernandez wins a free-kick on the near side and Joao Mario pumps a ball into the middle which Cahill heads away and Chelsea try to hit on the counter.
Minute
Description
81'
West Ham are a completely different animal since their equaliser and the Hammers certainly feel like they can snatch a win. A point would be a good result, a win would be tremendous- potentially the defining point of their campaign.
80'
WHAT A SAVE! Chelsea respond, with Marcos Alonso striking a fierce shot towards the top corner. Hart gets a strong hand to the attempt though to keep it out and the resulting corner is dealt with.
78'
Pedro enters the game and replaces V. Moses.
O. Giroud enters the game and replaces Álvaro Morata.
Changes afoot for Chelsea, the first of which sees Pedro take the place of Victor Moses.
The second change shows Conte's desire to win, as he replaces Morata with Giroud.
77'
Courtois had absolutely no chance keeping that out and he'll be furious with Cahill. It was a woeful attempt to head the ball away from danger and he's paid the price.
73'
J. Hernández has scored a goal for West Ham United! Assist by M. Arnautović.
GOAL! Hernandez just loves to score against Chelsea! Arnautovic picks up the ball after Cahill's poor defensive header, playing the ball back to the Mexican striker to smash home. Brilliant finish, game on!
Arnautovic has played well today when he's managed to get the ball and he's provided the impact there, putting the ball on a plate for his attacking partner.
72'
West Ham are certainly being encouraged to push forward by Chelsea's approach, as they've really taken their foot off the gas.
70'
J. Hernández enters the game and replaces E. Fernandes.
West Ham need an impact and they look to the bench, introducing Javier Hernandez in place of Fernandes.
69'
WIDE! Chelsea pinch the ball off Masuaku, with Moses curling an effort wide of the mark.
68'
Chelsea far from firing on all cylinders but, to be fair, they haven't needed to be. They'll need to perform better in the coming weeks though, particularly for the FA Cup semi-final against Southampton.
66'
West Ham enjoing a decent spell of possession at the moment but they're not doing anything with it. Courtois has had the easiest job in the world so far this afternoon.
64'
P. Evra enters the game and replaces A. Cresswell.
There's the change we expected, with Cresswell replaced by Evra.
62'
Hazard has looked much better today compared to his performance last week and his surging runs forward are causing the West Ham defence a wealth of issues.
60'
Cresswell is still moving rather gingerly down the near side and Patrice Evra is warming up on the sidelines. A defensive change could be on the horizon.
59'
OFFSIDE! A massive let off for West Ham! The Hammers sloppily give the ball away to Morata, who brings Willian into play. The Brazilian shows skill to beat his man and drills a low delivery back into the Spaniard, who pokes home but is flagged offside.
58'
Cresswell is back on the field and will try to run off his issue. The physios didn't see too concerned, suggesting it's just a knock.
57'
Now this is exactly what West Ham don't want to see, as Aaron Cresswell is down in pain and requires some attention. The Hammers' injury issues in defence are well documented, so this would be a massive blow.
55'
MISS! A corner swings into the middle for Chelsea, where Morata heads over the bar. The second goal for the Blues looks inevitable.
54'
West Ham are being completely overrun in midfield, with Fabregas allowed to pull the strings. I've seen nothing good from Kouyate or Noble today.
53'
All West Ham have showed today is why they're definitely still in immense danger of a drop to the Championship despite a morale boosting win against Southampton. No desire, no attacking edge and a lot of defensive woes.
51'
OVER! Chelsea banging on the door for a second goal as Alonso drags a low ball across the face of goal to where Willian and Morata are lurking but both miss it. Moses gets the ball on the edge of the area moments later, smashing high over the net.
49'
Well, no sign of anything better from West Ham since the restart. It could be a long afternoon for the travelling supporters.
47'
CHANCE! Willian has been extremely bright today and he's close to killing the game. Hazard darts into the box and flicks a pass back to the Brazilian, who cuts into a shooting position but strikes wide of the post.
46'
M. Noble gets yellow.
A blatant foul from Noble as he tugs the shirt of Hazard and an obvious yellow card.
45' +1
ONE minute of time added on.
45'
KICK-OFF! Back underway at Stamford Bridge, where West Ham get us started and now attack to the left.
42'
West Ham need to keep composed in defence for the final minutes of the first half, as a second goal before the break would certainly kill the game as a contest. They're out of the game as it is but while the deficit is just a single goal, they'll have a chance of a comeback.
40'
Masuaku penalised for a foul on Hazard, giving Chelsea a free-kick just outside the box on the far side. It's not the sort of angle where Willian can cause too many problems with a shot but he tries one anyway, firing towards the near post and seeing the ball cleared away.
38'
A goal that was certainly coming given Chelsea's dominance and Moyes will be furious at the manner of how they conceded it. It was incredibly sloppy at the back and a real gift to the Blues.
36'
César Azpilicueta has scored a goal for Chelsea! Assist by Álvaro Morata.
SAVE! Hart the hero for West Ham! Brilliant passing move from Chelsea, as Morata tees the ball off for Hazard and the Belgian pokes through to Willian. He's thwarted by Hart, who charges off his line and provides a crucial save.
GOAL! Chelsea take the lead from the resulting corner! It's taken short to Moses and his delivery isn't dealt with, falling kindly for Azpilicueta who pokes home and dedicates his goal to the late Ray Wilkins.
Morata may have struggled for consistency this season but his presence does cause opposing defenders all sorts of problems. He gets the assist for the opener.
35'
Chelsea are hardly setting the world alight here, despite their dominance on the ball, and there hasn't been too much to get excited about. West Ham would certainly take this though.
31'
WIDE! Chelsea go short from yet another corner, finding Willian on the edge of the area. The Brazilian sets his sights on goal and tries to curl an effort into the net but his angles are off.
29'
CLOSE! Almost a sensational opening goal! Hazard exchanges passes to find space in behind, cutting a ball back across to Morata. The Spaniard flicks an effort towards the far corner but it's wide of the mark.
27'
West Ham don't have that figure in midfield to rely upon, the sort of player who can steal possession and spark an attack. It doesn't help being penned in by Chelsea but that lack of inspiration has been absent all season, perhaps playing a part in their struggles.
25'
A good defensive line from West Ham to catch Morata offside there but it does issue a warning to the Hammers defence. If they stay under this amount of pressure an opening goal is surely not too far away.
24'
OFFSIDE! Chelsea find a breakthrough as Hazard pokes through a pass to Morata, who slots between the legs of Hart, but the offside flag is correctly raised.
22'
Corner for Chelsea as Willian's shot is deflected off Cresswell, which the Brazilian heads over to take. Azpilicueta meets it at the near post but can only put the ball way over the top of the bar.
20'
West Ham have done well to keep Chelsea fairly contained in the opening period but David Moyes will certainly want to see more from his side in an attacking aspect, as they've struggled to retain possession so far and haven't been able to build up a threatening push forward.
18'
Still awaiting the game's first clear-cut chance, as the closest we've come to a goal was Hazard's darting solo run forward before dragging a shot wide. At the other end, West Ham are yet to see a sight at goal.
15'
CHANCE! Brilliant movement from Arnautovic to latch onto a long ball forward but the Chelsea defence recovers to put the ball out for a corner. Cresswell is the man on the near side to take it but it goes all the way through and behind for a goal kick.
13'
First chance for West Ham to put Chelsea under pressure as Zabaleta wins a free-kick but Joao Mario's curling delivery into the box is overhit, not causing the Blues any danger.
11'
It's been one way traffic in west London so far, with Chelsea dominating the tempo of the game and seeing the majority of the ball.
9'
Stamford Bridge rises to its feet in the eighth minute to remember Ray Wilkins once again.
8'
West Ham win a corner on the far side and Joao Mario is the man to take. It's curled right onto the line, where Courtois palms it away and wins a free-kick as he's being held back by Rice.
6'
Solid start from Chelsea, who have kept West Ham penned in and have already put the Hammers under some pressure. The visitors yet to enjoy a decent period of possession.
4'
Superb from Hazard! The Belgian skips forward from just inside the West Ham half, finding room for a shot and seeing his effort narrowly bobble wide of Hart's right-hand post.
3'
Redemption certainly on the mind of Chelsea today following their defeat last week and Arsenal's victory over Southampton earlier today has increased the pressure on the Blues, who now sit just two points ahead of the Gunners.
1'
KICK-OFF! We're underway at Stamford Bridge, where Chelsea get us started and attack to the right in the first half.
Good afternoon and welcome to our LIVE coverage of a crucial Premier League London derby, where Chelsea host West Ham at Stamford Bridge.
After losing to Tottenham Hotspur at home last weekend, Chelsea's chances of securing a top-four finish are sinking quickly. The defending champions are in a woeful run of form, leading to speculation over Antonio Conte's future, and a victory today is needed to ease the pressure surrounding west London.
Things haven't been too much better across the capital, where West Ham are fighting to avoid relegation. Last weekend's 3-0 victory over Southampton gave the Hammers some breathing room but there's still plenty of work to do. Their record at Stamford Bridge is woeful but they may fancy their chances this afternoon.
Chelsea XI: Thibaut Courtois; Cesar Azpilicueta, Gary Cahill, Antonio Rudiger; Victor Moses, N'Golo Kante, Cesc Fabregas, Marcos Alonso; Willian, Eden Hazard; Alvaro Morata.
West Ham XI: Joe Hart; Declan Rice, Angelo Ogbonna, Aaron Cresswell; Pablo Zabaleta, Cheikhou Kouyate, Mark Noble, Arthur Masuaku; Edimilson Fernandes, Joao Mario; Marko Arnautovic.
Chelsea subs: Willy Caballero, Pedro, Daniel Drinkwater, Emerson, Andreas Christensen, Tiemoue Bakayoko, Olivier Giroud.
West Ham subs: Adrian, Javier Hernandez, Jordan Hugill, Josh Cullen, Patrice Evra, Josh Pask, Grady Diangana.
Just a single change for West Ham following the win over Southampton and it's an enforced one. Michail Antonio, out for the season, misses out and sees his spot in the side taken by Fernandes.
As we've seen throughout the Premier League this weekend, there's a moment before kick-off to remember the life of Chelsea icon Ray Wilkins who sadly passed away this week at the age of 61. From Blues skipper to assistant manager, the 84-cap former England international dedicated years of his life to the west London side and will be sorely missed.
Two changes for Chelsea after the defeat last week, with Courtois and Cahill returning to the side. Caballero and Christensen are the pair who miss out, dropping to the bench.
HALF-TIME! Easy enough for Chelsea so far, who have dominated the play and have't had to do too much in the way of defending. They took advantage of a sleeping West Ham defence to take the lead, with Cesar Azpilicueta poking home from close range.
The job isn't done for Chelsea and Antonio Conte will want more from his side, particularly as they've looked vulnerable to long balls forward and have encouraged pressure when playing out from the back. So far so good though on an emotional afternoon for the Blues.
West Ham, to put it bluntly, haven't been in the game. There's been little intent to get forward and even less for Chelsea to worry about. At the back they've been caught out and have often invited pressure, making last weekend's win over Southampton even more valuable. Not good enough at all for the Hammers.
Not a great omen for West Ham. David Moyes has ended on the losing side in each of his last 14 Premier League away games in which his side has been behind at half-time. Antonio Conte, in contrast, has won all 18 of his previous home games when holding a lead at the break.
FULL-TIME! A massive point for West Ham, who fight their way back from behind to snatch a draw at Stamford Bridge- seemingly crushing any hopes the Blues have of securing a top-four finish. Cesar Azpilicueta took advantage of lacklustre defending in the first half to give the hosts the lead but Javier Hernandez, off the bench, was West Ham's hero.
A chorus of boos ring out at Stamford Bridge following the final whistle, in a result that will surely lead to further questions about Antonio Conte's future. The next two weeks will be crucial to the Italian's time in west London, as they face another struggling side next week in the form of Southampton before clashing with the Saints again at Wembley the following week for a place in the FA Cup final. Chelsea are now just three points ahead of sixth-placed Arsenal.
Six points is the margin that West Ham now boast over the relegation zone and last weekend's win at Southampton looks to have been a turning point. The Hammers look to be just a couple more wins away from securing their Premier League status, raising the importance of next weekend's clash with second-bottom Stoke.
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