Diego Costa, Willian and Eden Hazard scored three brilliant goals to down Manchester City at the Eithad Stadium this afternoon.
And they had to come from behind to do it.
The league leaders humbled their illustrious opponents 3-1 and could count on some refereeing decisions going their way too.
But this resilience will sent shockwaves round the Premier league as the Blues extend their winning run to eight straight wins.
The match ended in a shambles with the sending off of Fernandinho for pushing Fabregas over the advertising hoarding after grabbing his throat twice after a crunching two-footed tackle by Sergio Aguero on Luiz saw a melee of players surround the incident.
The Argentina striker also saw a straight red for his horror challenge.
Substitute Michy Batshuayi got a yellow for his involvement too.
Hazard was trodden on by Fernandinho within seconds of the klick-off.
City had a claim for a penalty turned down when David Silva turned gary Cahill. The ball hit the centre-back's hand but unintentionally and referee Antony Taylor played on.
On 14 minutes, three players, Sergio Aguro, Victor Moses and Leroy Sane lay injured on the ground, none too in Jared.
Hazard had the first serious attempt on goal, but his edge-of the penalty area curlews inched just wide.
Nicolas Otamendi was fist in the refers book for a late challenge on Diego Costa on 17 minutes.
Thibaut Courtois was forced into a smart save for a corner from a Aguro rasper on 21 minutes.
City thought they had scored on 25 minutes when a brilliant Kevin De Bryune free-kick was met full on he head of Fernandinho, but he and two other city players were offside.
Seconds later and hazard was put free but after rounding Claudio Brava, could, rather than attempt an angled shot only cut the ball back, which was cleared.
Taylor was under fire by the home fans on 30 minutes when they thought Aguero was fouled by David Luiz. If given, as the last man he would have been sent off. But instead he adjudged it to be a fair shoulder charge and played on.
For all of City's pressure, Luiz, Kante Azpilicueta - all put in last-ditch challengers to thwart the visitors - including a penalty shout.
Ironically with a minute before the half-time whistle a Jesus Navas right wing cross bounced off the leg of Gary Cahill and clipped into the far corner of Courtois's net to put the home side 1-0 up.
There was no change by either side at half time.
Courtois was once again Chelsea's saviour four minutes after the restart when he got down low to a De Bryune shot after an excellent breakaway from Sane.
The up stepped Costa to shoot, but his effort seemed halfhearted.
Head coach Antonio Conte decided to replace out of sorts Pedro with Willian. A sloppy backpass to Courtois by Alonso allowed Aguero to nip in as Cahill left the ball for the goalkeeper. Thankfully the centre-back made amends by hacking thre goal-bound shot off the line.
A brilliant counter-attack by City should have doubled their lead but De Bryune somehow rattled the crossbar from six yards out with an open goal to play with.
Against the run of play, on 59 minutes, a sensational defence-splitting ball by Cesc Fabregas found Costa, who chested the ball past Otamendi and the striker powered home his 11th league goal of the season to put the league leaders level.
Within seconds of almost conceding the Londondera went 2-1 up when Costa set up Willian, who raced clear for 50 yards before planting a low, right-footer past Bravo.
With seven minutes on the clock, Costa fell to the ground injured. He was replaced by Michy Batshuayi.
Sensationally with 90 minutes on the clock a long ball by Alonso picked up Hazard in his own half, the Belgium ran the length of the City half, outpacing Aleksandar Kolarov before slamming the ball home to make it 3-1.
Then City plywrs lost the heads. Guernsey lunged into Luiz, Fernandinho threw Fabregas over the advertising hoarding, quickly followed by a hot of players and club officials ganging up on each other. Aguero and Fernandinho were red-carded.
Next up for the Blues is a home league match against West Bromwich Albion on Saturday.
Teams
Chelsea: Courtois, Alonso, Fabregas, Kante, Hazard, Pedro, Moses, Cahill, Azpilicueta, Luiz
Subs: Begovic, Ivanovic, Oscar, Willian, Batshuayi, Chalobah, Aina
City: Bravo, Gundogan, Aguero, Kolarov, Navas, De Bruyne, Sane, Stones, Fernandinho, Otamendi
Subs: Caballero, Sagan, Zabaleta, Reyes, Clichy, Toure, Iheanacho
Referee: Anthony Taylor