Koulibaly joins Kovacic in the referee's book after making a clumsy challenge in midfield.
90'
Four minutes of stoppage time to come...
89'
M. Kovačić gets yellow.
Kovacic receives the first yellow card of the night after he brought down Grealish.
86'
K. Phillips enters the game and replaces Rodri.
Rodri's night is now over, with Phillips on in his place for the final few minutes.
84'
There is still time left, but Chelsea may be one of very few teams who can brag that they have stopped Haaland from scoring against them in the Premier League. Let's see if he can change that in the next seven or eight minutes.
81'
City's lead is still intact, and unless Chelsea improve their play in the final third, it will stay that way.
78'
While Potter's side are still chasing the game, Gallagher is doing all he can to put his side in a position to earn a draw. He has run himself into the ground since leaving the bench, and the Chelsea fans have been delighted by his efforts.
75'
Potter's latest substitutions have not helped Chelsea regain control of the match, and it is City that are bossing possession for now.
69'
C. Gallagher enters the game and replaces H. Ziyech.
Potter's third change in succession sees Ziyech replaced by Gallagher.
68'
L. Hall enters the game and replaces Marc Cucurella.
O. Hutchinson enters the game and replaces P. Aubameyang.
Hall has also made his way onto the pitch, with Cucurella the one to make way.
Aubameyang did very little to help Chelsea take the lead, and he has now been replaced by Hutchinson.
Minute
Description
65'
Less than five minutes after coming off the bench, Grealish and Mahrez have handed City the advantage. Now, what can Chelsea do in response?
63'
R. Mahrez has scored a goal for Manchester City! Assist by J. Grealish.
GOAAAALLLL - CHELSEA 0-1 MANCHESTER CITY - The subs combine to devastating effect, and Mahrez opens the scoring for the visitors. Grealish's cross from the left wing was inch-perfect for Mahrez, who slid in at the far post to hand City the lead. What an impact!!
Grealish has endured his fair share of criticism since joining City, but that pass was a moment of real quality. With his left-footed cross, he cut out most of the Chelsea defence, allowing Mahrez to beat Cucurella at the back post.
60'
J. Grealish enters the game and replaces P. Foden.
Grealish is also on the field of play, and it was Foden that made way for his fellow England international.
Guardiola makes another double substitution, with Mahrez on in place of Bernardo Silva.
59'
R. Mahrez enters the game and replaces Bernardo Silva.
48'
Haaland's first shot of the second half failed to trouble Kepa, but that was much better from the City frontman. He dropped deep for possession and wasted no time before shooting, and City will hope he can be sharp and decisive in the second 45 minutes.
47'
We are back under way at Stamford Bridge!
46'
R. Lewis enters the game and replaces João Cancelo.
M. Akanji enters the game and replaces K. Walker.
Guardiola makes a double change at the break as Walker makes way for Akanji.
Despite his strong first-half display, Cancelo is also replaced at the break, with Lewis now on in his place.
45' +2
HALF-TIME - CHELSEA 0-0 MANCHESTER CITY.
45'
Two minutes of stoppage time to come at Stamford Bridge!
40'
De Bruyne isn't the only City midfielder to have had a quiet night so far. Foden has had very few chances to get involved, and Potter will undoubtedly be the happier of the two managers.
29'
City midfielder De Bruyne has been incredibly quiet so far, but as Chelsea will know, he could come to life at any moment.
26'
Chelsea have enjoyed the lion's share of possession in the last five minutes, and they are really battling with City in midfield. The home fans are enjoying every second, and rightly so.
23'
Panic over! Koulibaly appeared to have suffered an injury of his own, but the Senegal international only needed to change his left boot. What a relief for Chelsea!
22'
C. Chukwuemeka enters the game and replaces C. Pulišić.
Chukwuemeka makes his way onto the pitch, with Pulisic already on his way down the tunnel.
14'
Manchester City's first meaningful attack on goal comes to nothing as Gundogan's cross, intended for Haaland, was intercepted by Kepa. The Chelsea goalkeeper showed great reactions on that occasion, and he will need to be on his toes for the rest of the contest.
11'
Cancelo looks full of energy tonight on his return to the starting XI, and he has already got forward on three occasions to put Chelsea under pressure.
9'
Chelsea have adapted well to the change in tactics, but we have yet to see either side create a meaningful opportunity.
6'
Potter has changed his tactics, with Aubameyang now playing up front and Havertz dropping into midfi
5'
P. Aubameyang enters the game and replaces R. Sterling.
Sterling's night lasted all of five minutes, with Aubameyang now entering the game a lot earlier than he expected.
4'
Sterling appeared ready to continue, but Chelsea's medical team have told Potter to prepare a substitution.
1'
We are under way at Stamford Bridge!
Hello, and welcome to tonight's live coverage of the Premier League clash between Chelsea and Manchester City from Stamford Bridge. The visitors will hope to reduce Arsenal's lead at the top of the table, while Chelsea can move up to seventh with a win.
The two sides will be sick of the sight of each other by the end of this week, with the two teams set to meet in the third round of the FA Cup on Sunday. While Graham Potter and Pep Guardiola are likely to make wholesale changes for that match, they will do all they can to field the strongest teams possible for this Premier League battle.
Chelsea have stayed unbeaten since they returned to action from the World Cup break, but they have yet to show the same form that helped them enjoy a nine-match unbeaten run when Potter took charge earlier this season. They were held to a 1-1 draw by Nottingham Forest last time out, just a few days after beating Bournemouth 2-0.
Manchester City are also unbeaten since they returned to domestic duties, and they followed up their 3-2 EFL Cup win over Liverpool with a 3-1 win over Leeds United before they were held to a 1-1 draw by Everton last time out. Both sides will want to prove a point during tonight's contest in the capital.
CHELSEA (4-2-3-1): Kepa Arrizabalaga; Cesar Azpilicueta (c), Kalidou Koulibaly, Thiago Silva, Marc Cucurella; Denis Zakaria, Mateo Kovacic; Hakim Ziyech, Christian Pulisic, Raheem Sterling; Kai Havertz.
SUBS: Marcus Bettinelli, Jorginho, Pierre-Emerick Aubameyang, Trevoh Chalobah, Conor Gallagher, Carney Chukwuemeka, Bashir Humphreys, Omari Hutchinson, Lewis Hall.
SUBS: Stefan Ortega, Kalvin Phillips, Jack Grealish, Julian Alvarez, Sergio Gomez, Manuel Akanji, Riyad Mahrez, Cole Palmer, Rico Lewis.
MANCHESTER CITY (4-3-3): Ederson; Kyle Walker, John Stones, Nathan Ake, Joao Cancelo; Kevin De Bruyne, Rodri, Ilkay Gundogan (c); Bernardo Silva, Erling Haaland, Phil Foden.
The two teams are out on the field of play, and we are moments away from kick-off.
City have the chance to close the gap on Arsenal tonight, but they will need to do more to take the lead. It speaks volumes that Cancelo has been their best player, but Guardiola will hope to see more from Foden, De Bruyne, Gundogan and Haaland in the second half.
FULL-TIME - CHELSEA 0-1 MANCHESTER CITY.
That is all for tonight folks, thanks for joining us. Goodbye!
As we said earlier, these two sides face each other again on Sunday in the third round of the FA Cup, and Potter will hope both Sterling and Pulisic can recover from the injuries they suffered in the first half. Chelsea's results need to improve, but by only losing 1-0 to City, they have proven they can compete with the best in the Premier League.
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