BARCLAYS PREMIER LEAGUE
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2 - 0
And that's the last action - the whistle goes. City deserved a win that puts them seven points in front of Chelsea and 12 behind United - but the Blues will wonder what might have been after Hart saved Lampard's penalty.
They win a free-kick on the byline, but it comes to nothing.
Ashley Cole hits a half-hearted effort from the edge of the area. It's blocked, and there could be one more break on for City here...
Cahill hacks clear as the ball almost bounces back towards the City attackers. Seconds remaining now.
David Silva is off and Joleon Lescott on as Mancini does make one more very late change.
David Luiz tries a shot from just outside the area, and blazes it well over the top.
There will be four minutes of added time, and there will be another City change, it seems.
Aguero is off and Nasri on for City.
The City man took a bit of a knock in that challenge. He gets a spot of treatment, but he's fine.
Ramires runs forward but holds the ball too long and, by the time he gets round to trying to feed it to Moses on the left, Nastasic can block him.
Milner looks like the man most interested, but in in the end it's played back and City lose possession.
Luiz fouls Yaya Toure. Free-kick to City on the right, in a crossing position.
Free-kick to Chelsea in their own half. Whatever happens now is too little, too late. The big 'what if' for them surrounds Lampard's failure to beat Joe Hart from the penalty spot.
No doubt about the outcome now. Ramires makes a rather forlorn run forward, and falls over. City bring it away and Aguero has possession down the left.
GOAL: And he hits a brilliant shot from the edge of the D, blasting past Cech and into the corner. Wonderful finish, and that's the three points wrapped up for City.
Ramires tries to get forward down the right - it eludes him and City have a chance as the ball falls back to Tevez on the edge of the area...
Another poor pass from Tevez, out to the right and wildly overhit.
A very unlucky moment for the Saints, as a Shaw clearance ricochets off team-mate Jos Hooiveld and into the net.
Another goal at Newcastle - the home side are now 4-2 up on Southampton thanks to an own goal.
They had a chance to break, but the ball forward from Tevez is poor and trundles out for a throw.
He finds himself in a crossing position on the left, but the effort is weak and easily brought away by City.
Fernando Torres is on for the Blues, replacing Mikel.
Moses and Mata try a one-two, but Kolo Toure is in the way.
Ten minutes remaining at the Etihad, and City on track for a narrow victory.
Mata controls a long ball down the right superbly, but he's short of support and the threat disappears.
Ramires and Cahill, just inside the City half. Oscar tries to get on the end of a chip forward, but the pace on the ball defeats him and it's out of play.
A few mutterings from the home fans as Chelsea have possession again. Kolo Toure gets in to put the ball out of play, though.
Ashley Cole is fouled by Silva, and Chelsea switch the play to Moses on the right. He crosses low, and it's cleared.
At the other end, Cech comes out to claim a misdirected ball forward and try to get his side on the move again.
Manchester City to win, with bet365
Chelsea to win, with bet365
Into the final 15 minutes. Chelsea in possession. Mata finds Ivanovic, who is unable to get a shot away from just inside the area.
Ivanovic and Mata link in midfield for Chelsea, but then they go wrong with an attempted one-two, the ball forward far too far ahead of Ashley Cole on the left.
Goalscorer Toure swings a nice ball out to Zabaleta and then tries to play a one-two with the onrushing Milner. The touch is too heavy, though, and the ball is behind for a goal-kick.
Twenty minutes or so remain for Chelsea to try and find an equaliser, but City have the ball again.
And now Luiz drives through the centre circle for Chelsea, but he's robbed.
Offside against Aguero as City look to break once again.
And there has been a fifth goal at Newcastle - the home side back in front thanks to a Cabaye penalty.
Lampard, having missed the penalty, is also off, making way for Victor Moses.
Silva, not to be outdone, gives it away himself as City try to break forward.
Chelsea's corner comes to nothing. When they win it back, Luiz gives it away spectacularly carelessly.
Oscar is on, and Hazard is off.
Oscar is getting ready on the touchline, but Chelsea are coming forward without him. Hazard crosses dangerously and wins them a corner.
It looks as though Rafa Benitez may respond to his side's deficit by throwing Oscar into the fray.
But they lose it, and City again come forward and cross. Cech clutches that one.
Garcia challenges well in midfield - throw to Chelsea.
City try to move forward again, but the pass to Aguero is poor - overhit and out of play.
So Chelsea, who could have led, are now behind. What can they muster in response?
A great goal from the midfielder, and the home side have the breakthrough.
GOAL: And City make him pay straight away - Yaya Toure drives into the area and curls a superb low shot past Cech and into the corner.
Ivanovic feeds Ramires, who takes too long inside the area after a lovely counter-attack. The Chelsea man then slumps to the ground. If that was an attempt to win a penalty, it was pretty poor.
...but all in vain. They go backwards to try and get forwards, and it fizzles gently out.
City get it away, but this will be coming back again - the home side clear again and break with Tevez...
Ramires comes forward for Chelsea and wins a corner on the hour.
Then Silva swipes a shot from the edge of the area, and it's miles over and miles wide.
City try and intricate set of one-twos inside the Chelsea area. but the ball is put out for a throw.
Signs that this game is coming to life now, but still we await the breakthrough.
Great crossfield ball from Lampard to Mata, but City shut the door on the Spaniard.
Again, Aguero gets into the area. Cech comes hurtling out, and the City man floats his attempted chip over the bar.
Ramires fouls Nastasic inside the City half - free-kick to the home side.
In it comes, but Chelsea deal with that comfortably enough.
Aguero scampers into the area for City, and Cahill does well to put the ball out for a corner.
An early change for Mancini - can that give his side a more unpredictable edge?
Carlos Tevez is on for Manchester City - to a big reception - with Jack Rodwell the man to make way.
Another goal at Newcastle - Rickie Lambert has levelled things up for Southampton. It's two each there.
By far the most significant moment of the game so far, and a crucial intervention by City goalkeeper Joe Hart means we still don't have a goal here.
The corner comes in towards Cahill, whose header lands on the roof of the net.
SAVED! Lampard hits it low, and Hart makes amends, pushing it away.
Lampard to take it...
PENALTY TO CHELSEA - Ba chases a ball, touches it away from Hart, and the goalkeeper's challenge is clumsy.
Yaya Toure feeds a ball into the area towards Aguero. It's just too far in front of him, and Cech slides out to grab that one.
Mata crosses from the left towards Ba, and City get it away.
The ball falls to Lampard, who takes a swipe from miles out and sees the ball ricochet off a defender.
Good movement there from City, and that would have been some finish had Aguero been able to steer it on target.
Rodwell, Yaya Toure and Clichy combine to fashion a crossing position for City on the left. IT's cleared, and Silva crosses to Aguero, whose spectacular scissors kick flies wide.
Then Cahill looks for Ba, and Nastasic is the defender who deals with things for City this time.
The Blues play a long ball forward towards Ba, and Kolo Toure deals with that one calmly.
Chelsea start us off - will the second half bring more in the way of attacking threat?
The teams are back out for the second half, which will be under way shortly.
And that's the half-time whistle - stalemate at the Etihad at the break.
Cole on the ball for Chelsea in what may well be the last move of the half - Chelsea lose it, win it back and lose it again. Ramires runs into the area, but his touch is a bit too heavy and the threat fizzles out.
We are into added time at the end of the first half. There will be two extra minutes.
Lampard gets the ball out wide to Ramires on the right - City defend their lines well.
Papiss Cisse has another goal for Newcastle at St James' - the hosts have turned that game around.
Hazard's ball in is dreadful. City clear that one easily.
He's in the book too, and Chelsea have a free-kick in a dangerous crossing position...
Better from City again. Chelsea comes forward and Zabaleta fouls Cole.
From the corner, Rodwell gets a header - Cech clutches it.
Rodwell tries his luck for City from long range. It's well hit, and Cech tips it over the top.
Corner to Chelsea in the meantime. Silva is back to clear his lines for Manchester City.
Kolo Toure challenges Mata and is adjudged to have committed a booking-worthy offence.
Cahill was the defender who got his head to that effort - a very good block from the Chelsea man.
Milner crosses and Zabaleta volleys. It's worrying Cech, but hits a defender before it can get to him.
City cross deep from the left - Aguero tries to make something of it, but Chelsea usher that one away.
Indeed he does - one yellow card apiece at the Etihad.
Ramires challenges Yay Toure heavily and high. He might go into the book for that...
And when City do get possession back, they are giving the ball away. It's just not happening for them at the moment.
Ten minutes until the break, and there have been few signs of a breakthrough at either end. Mikel plays it wide inside his own half, and Chelsea are content to go back to Cech, and then out to Luiz.
Chelsea offside. Hart dashes from his goal to take the free-kick and the rolls it sideways to Clichy. City play it forward and Chelsea just thump it away.
Newcastle have levelled the score against Southampton at St James' - Moussa Sissoko with that strike. Two goals there, no goals here.
Silva again looks for Rodwell, and it's a good ball in - Chelsea at full stretch to get that one away.
City have the throw on half-way. Toure picks up possession and starts a trademark run. Cole makes an excellent challenge to nick the ball behind for a corner...
The Chelsea 'keeper takes the goal-kick long, and Hazard controls with some neat skill. Like much else in this half, however, it comes to nothing.
...Rodwell attacks it, but can't keep the header down and it poses no problems for Cech.
Half an hour gone, and it's stalemate at the Etihad. Aguero looks to change that, getting down the left and crossing...
And that's the first yellow card of the game for the City midfielder. Another decision that hasn't gone down at all well with the home faithful.
Rodwell hassles Cahill, and when the ball comes out Nastasic fouls Ba. Then Rodwell clatters Ivanovic on the touchline.
And as I say that, Lampard gets his free-kick all wrong, hitting it in the general direction of the centre of Manchester.
Chelsea are suddenly back into this game, and their football is becoming more positive with every passing minute.
Forward again, and long, for Ba. When Chelsea pick up the pieces, another foul by City in midfield gives them a free-kick.
Free-kick to Chelsea: Mikel floats it in, and City head it out.
Cole and Mikel combine on the left, but the Blues have to work the ball back into their own half. Cole scampers forward again. Zabaleta is again adjudged to have fouled Hazard, and gets a talking to from ref Marriner.
Cahill tries to cross from the left of the area, and City block. But that was more like it from Chelsea - a bit of attacking intent.
Ramires crosses, very deep, and City get that one away. But Zabaleta fouls Hazard, and they can play it back in from the free-kick.
Chelsea have a free-kick for a foul on Ramires inside their own half. Hazard finds some space on the left, and then Lampard works it to Ivanovic...
A chorus of Blue Moon from the home fans, who are doing their best to rouse their side into goalscoring action.
Mata - of all people - clears as Silva cuts the ball back into the area. As City come again, the cross goes behind.
Chelsea clear and the ball goes forward long towards the lonely Ba, who isn't getting much change from the City defence or support from his Chelsea colleagues.
Straight to the other end - another City cross, this time from the left, brings another corner as Cahill slices it behind.
He's back on his feet now, though. His side come forward with Ba, but the striker is crowded out.
But that was a bit more like it from City, and the crowd have responded. Rodwell challenges Ramires heavily but fairly, and the Chelsea man is down. The crowd don't like that reaction.
Then Aguero gets in as Chelsea lose the ball. Silva finds him inside the area, he gets around Cech - and then overruns it from a tight angle. The best chance of the afternoon has just gone begging.
Milner plays it short. Silva feeds Rodwell inside the area and he tries a shot from an angle, which is blocked.
A bit more tempo - Silva finds Yaya Toure, whose effort is deflected behind off Cahill. Corner to City.
Perhaps now - Milner feeds Zabaleta on the left, and he crosses. The ball in - again - is dealt with well by the visiting back line.
In a few home games this season, City have appeared unable to force the pace and the issue in the way they did in their title-winning campaign.
Cole and Lampard combine, and then the ball is funnelled back to Luiz. It goes forward aimlessly, and this is all a little bit shapeless.
Silva to take it, from the right. Nastasic meets and heads it down. Cech saves, but the whistle had gone.
City come again, though, and this time the ball deflects off David Luiz and behind for a corner.
City have it back, and Garcia finds Aguero, whose ball in is cut out by Chelsea.
Mata almost wriggles his way into space inside the City area, and is only just crowded out.
Ramires is on the ball, with Aguero briefly on the floor after a collision. Chelsea lose it, and then Aguero gets a talking-to for a mid-air clash with Ivanovic.
Another cross comes in for the Blues - a more dangerous one, but again City defend well.
Ten minutes in, and the ball is back with Cech. He plays it forward, and then Mata plays it wide to Ivanovic, whose cross is cleared.
Zabaleta does well, winning the ball and charging forward, but his work is wasted as an attempted cross is then blasted behind.
Milner trips over the ball but then wins it back and gets in a good cross from the right. Cech claims well for Chelsea.
Ba chases a ball forward down the right, and Clichy does well to fend him away from that one.
The Blues come forward and win the first corner of the game. City stand firm and clear their lines well.
A neat move involving Milner allows City to cross, but the ball in from Clichy is a poor one.
A bit of Chelsea possession now - neat stuff on halfway, but they are soon forced backwards again.
Ivanovic plays it long and Garcia cuts it out. Rodwell takes over and City want a foul as Silva goes down. Nothing doing, says Mr Marriner.
We've hardly seen anything of the visitors on the ball so far - they have barely been able to string two passes together.
Cahill lumps the ball aimlessly downfield. Chelsea are back on the defensive as it comes back into their area, and Cech hacks it away.
It's been a bright start from Mancini's men - and a bright start for Southampton, too, who have taken the lead in the day's other Premier League game at St James' Park.
Kolo Toure wins the ball and plays it towards Clichy, who can't keep that one on. Chelsea throw.
Corner for City - a ball is lofted in towards Aguero and Ivanovic nods it behind.
Forward it comes, and Gary Cahill ushers it out of play on the left as Aguero chases.
The home side have possession again, and are just playing the ball patiently around the back line.
An early chance for City as Chelsea give the ball away. It falls to Yaya Toure on the edge of the box, but his low effort is straight at Cech.
City get the match under way, and the ball is quickly out for a Chelsea throw-in, which Cole will take.
And here we go with the handshakes. City can - surely - only be better than they were against Southampton, when a limp team performance littered with individual errors saw them slump to a 3-1 defeat on the south coast.
The players are in the tunnel, with referee Andre Marriner getting ready to lead them onto the pitch.
A shade over five minutes until kick-off - this is a big afternoon for both clubs.
Interim manager Rafa Benitez has made it clear that he wants the Blues to take second place in the Premier League - and they would take a big step towards doing that if they could win in Manchester today.
Chelsea have been an improved prospect in recent weeks, and remain in contention for the Europa League after squeezing past Sparta Prague at Stamford Bridge in midweek.
Manchester United's win at Loftus Road yesterday means the best City scenario this afternoon would still see them 12 points behind United. Defeat, though, would have third-placed Chelsea only a point adrift of Mancini's men.
Furthermore, City manager Roberto Mancini believes cross-town rivals Manchester United, who beat QPR 2-0 yesterday, are lucky to be 15 points clear at the top of the Premier League. Read the full story here
Good egg Jon Carter has previewed today's game. This way for his words on the Etihad Stadium encounter.
Chelsea: Cech, Ivanovic, Cahill, Luiz, Cole, Mikel, Lampard, Ramires, Mata, Hazard, Ba.
Manchester City: Hart, Zabaleta, Kolo Toure, Nastasic, Clichy, Garcia, Milner, Rodwell, Silva, Yaya Toure, Aguero.
Good afternoon. We will be providing minute-by-minute commentary of Manchester City's Premier League meeting with Chelsea, which kicks off at 13.30 GMT. Team news to follow...