Diego Costa scored another late, late goal to down plucky Watford at Vicarage Road this afternoon, with the Blues winning 2-1. They are now undefeated with two wins from their two opening league fixtures.
He scored a late winner against West Ham on Monday and he was at it again.
The opening goal came from the home side when Etienne Capoue scored an early second half goal.
The first half was a tepid affair but erupted intimate life in the second period.
It was Antonio Conte's three substitutes who turned the game around. First Michy Batshuayi slipped home the ball as Heurelho Gomes failed to hold a Eden Hazard piledriver, then sub Cesc Fabregas put Costa clear with a brilliant pass, and the Brazil-born Spain striker coolly slotted home.
There was a distinct lack of intensity in the opening exchanges that were so evident last Monday against West Ham
Nevertheless on eight minutes, Thibaut Courtois was for forced into a smart save at the foot of his right upright to thwart a spirited drive by Jose Holebas.
Watford survived a scare three minutes later when a spectacular cross-field ball b y Pedro found Eden hazard on the left. The Belgium cut past Nordin Amrabat and sent in a great byline cross. Diego Costa was just a fraction late, and before he could tuck home at the far post, the ball was hacked clear for a corner by Miguel Britos.
A scuffed shot by Oscar on 17 minutes inched past Heurelho Gomes far post. Troy Deeney was yellow carded by referee Jon Moss for a foul on Hazard on 20 minutes.Conte get a nice waterproof jacket and a hat to shield himself against the rain. Amrabat cut through the the left hand side of the Chelsea;sea defence and put across a force byline cross. Like Costa before, Odion Ighalo was inches away from ticking the ball home from the near post but pressure from Gary Cahill forced the d the ball home past striker to hit the ball the wrong side of the net.
There were no changes in personnel at half-time.
But the Blues had a brilliant chance to open the scoring, on 52 minutes, when Oscar, on the right zipped then perfect ball across the six-yard line. Gomes couldn't come out, and hazard at the far post simply could not get firm touch on it, instead sending his first-time left footer into the stand behind the goal.
However with Watford's first foray in to the Chelsea half, on 55 minutes they scored. The ball came across the width of the area and at the far post was Etienne Capoue, who lashed a blistering left- footer high past Courtois and into the roof of his net.
A minute later, as the Blues tried to get a foot-hold back in the game, a smart one-two between Pedro and Hazard on the edge of Watford's penalty area, saw the Belgium shoot at goal from an acute angle, but Gomes snaffled the effort.
Nemanja Matic tried from 20 nares following a quick counter-attack, but his shot failed to trouble the Watford goal.
A Branislav Ivanovic piece of trickery almost reaped dividends but his effort was cleared for a corner. The Blues thought they had a penalty from the resultant kick, but that was waved away by Moss.
Antonio Conte decided on 70 minutes he had seen enough and brought on wide man Victor Moses for Pedro.
Oscar was then hauled off three minutes later. He was replaced by striker Michy Batshuayi.
Then on 77 minutes, Conte decided to bring on his last sub, Fabregas for Matic.
And it worked. A fierce shot by Hazard was not held by Gomes and Batshuayi was quickest to react and tucked home the rebound to level the score with 10 minutes left.
A Diego air shot, accidentally hit Capoue as both went for the ball, resulting with the home side scorer limping off the pitch, injured, to be replaced by Abdoulaye Doucoure.
Incredibly with a seconds left on the clock, Fabregas picked up the ball, just outside his own area and sent a brilliant defence-splitting ball into the path of Costa, who raced the half length of the pitch, before slotting home, with a low drive underneath the body of Gomes.
With five added minutes, the Blues could have added a third but Batshuayi's bl;combusted ricocheted off the Watford crossbar.
The Blues face Bristol Rovesr, on Tuesday, at home in the League Cup.
Teams: Chelsea, Courtois, Ivanovic, Kante, Oscar, Hazard, Pedro, Costa, Matic, Cahill, Terry, Azpiliceueta
Subs, Begovic, Fabregas, Loftus-Cheek, Moses Batshuayi, Chaobah
Watford: Gomes, Britos, Prodl, Amrabat, Deeney, Behrami, Cathcart, Guedioura, Ighalo, Holebas, Capoue
Subs, Pantilimon, Nyom, Doucoure, Zuniga, Vydra, Anya, Hoban
Referee: Jon Moss