Diego Costa continued his seamless introduction to the Premier League with his second goal in a week as Chelsea beat Leicester City 2-0.
Jose Mourinho's title hopefuls turned in a dazzling display to beat Burnley 3-1 in their opening fixture, with Spaniard Costa starring, but they found another newly promoted team a far tougher nut to crack on Saturday.
Home goalkeeper Thibaut Courtois was every bit as busy as his Leicester counterpart Kasper Schmeichel during the opening hour, with David Nugent’s failure to capitalise on a 55th-minute opening particularly costly for the visitors.
But, following a low-key first half, Mourinho's decision to push his full-backs forward after the interval paid dividends, with Branislav Ivanovic creating a scruffy 63rd-minute goal for Costa to break the deadlock.
It continued the flying start to his Chelsea career for the big-money arrival from Atletico Madrid and provided Mourinho with a welcome display of the cutting edge that Chelsea lacked in their push for Premier League honours last season.
Eden Hazard once again showed his class with a wonderful solo effort to seal the points, netting the second with 13 minutes left to seal the points.
The hosts pushed forward early on and Cesc Fabregas - who had performed a star turn on his debut at Burnley - played in Costa to set up Andre Schurrle in the eighth minute, but the Germany international shot over.
Gary Cahill then had a shot blocked when Schmeichel flapped at a 20th-minute corner.
Nevertheless, the visitors made a confident start as Nugent, Jeffrey Schlupp and Riyad Mahrez all asked questions of the Chelsea defence.
Schurrle headed over when a previously low-key Hazard shimmied his way to the byline, before Mahrez's own nifty footwork left Cesar Azpilicueta in his wake and created enough room for the winger to fire in a rasping 32nd-minute drive that Courtois had to beat away to safety.
The impressive Mahrez was guilty of overplaying as Azpilicueta snuffed out another promising attack and Chelsea responded, with City centre-back Wes Morgan flinging himself forward to divert Costa's 36th-minute strike over the crossbar.
Oscar clipped an 18-yard effort against the the inside of post three minutes after half-time and, as Chelsea kept the ball alive, Ivanovic headed goalwards from Azpilicueta's cross to draw a fine stop from Schmeichel.
Courtois then found himself back in action to keep out Nugent's deflected attempt on the counter-attack, although the sight of Schurrle curling a shot over the crossbar underlined Chelsea's continued threat.
Oscar had a 54th-minute penalty claim for handball rejected and, a few seconds later, Ivanovic hammered in a shot from distance to extend Schmeichel once more.
Again, though, Courtois was forced to outdo his opposite number, saving superbly after Nugent had raced clear one-on-one only to produce a shot that lacked conviction.
Schmeichel still appeared destined to be the busier of the two, clawing Fabregas' dinked chip behind in the 58th minute before Leicester's resistance was finally broken five minutes later.
Oscar sent Ivanovic racing into the City box and he found Costa, who scrambled the ball home under pressure.
Leicester faded as an attacking force thereafter while Chelsea introduced Didier Drogba late on for his second home Premier League bow.
But, despite seeing Hazard jink beyond substitute Marc Albrighton to rifle in a 77th-minute finish, Leicester boss Nigel Pearson was given plenty of reason to be optimistic for the challenges ahead.
Chelsea, meanwhile, already look every bit title challengers.
|Coach: José Mourinho|
for A. Schürrle 64'
for Oscar 70'
for Diego Costa 80'
|Inter ´dismayed´ at Fiorentina vice-president´s Salah Twitter outburst|
|Blaszczykowski ruled out of Dortmund´s Asia tour|
|Gerrard gets the beers in for LA Galaxy fans|
|De Gea coy over Real links|
|Former Brazil star Carlos handed Delhi reins|
|Ciftci will not push through Celtic switch – agent|
|In-demand Mitrovic considering Roma offer|
|Lehmann calls on Cech to ´get over´ Chelsea|
|Marlos double sinks Monaco|
|Mauritius 0 South Africa 2 (agg 0-5): Bafana set up Angola qualifier|
|Keane relishing Gerrard arrival|
|Palace confirm Cabaye interest|
|Hamburg bring in Spahic after head-butt ban|
|Blatter hits out at France and Germany over World Cup votes|
|Sanchez: World Cup exit spurred Chile to Copa glory|
|Jojic makes Cologne switch, Santana move falls through|
|Carrillo keen to get going at Monaco|
|Micronesia thrashed 38-0 as Fiji triumph in Olympic qualifier|
|Schalke stunned by ´machine´ Caicara|
|MLS Review: Keane shines at Gerrard´s Galaxy unveiling|
|Counter-attacking the key for Japan|
|Jimenez happy at Atletico|
|Gerrard predicts ´successful future´ with Galaxy|
|Iniesta can´t see Real selling Ramos|
|Keshi sacked as Nigeria coach|
|Three finals, three defeats for Messi, Mascherano|
|Nani close to Fenerbahce move|
|Sampaoli revels in ´unbelievable joy´|
|Bravo: Copa victory a dream|
|Martino: Argentina should have won|
|Chile 0 Argentina 0 (4-1 on penalties): Hosts end trophy drought|
|Germany 0 England 1 (after extra time): England make World Cup history|
|Kenya 0 Ethiopia 0 (agg 0-2): Hosts sent out of CHAN qualifiers after second penalty miss|
|Dortmund put 17 past Olympians, Bremen hand out thrashing|
|Dinamo Zagreb confirm arrests of coach and club president|
|I didn´t know who Wimbledon guest Klopp was - Brown|
|LeBron James backs Liverpool captain Henderson for FIFA 16 cover.|
|Ramos: I am not negotiating with anyone|
|Valencia complete Mina swoop|
|United States v Japan: US seek final redemption|
|Hanousek consigns Celtic to defeat|
|Roma confirm Dzeko interest|
|Arsenal forward Podolski completes Galatasaray switch|
|Warm Dortmund welcome delights Tuchel|
|Silva vows to fight for Madrid place|
|Mancini hints at Shaqiri and Santon departures|
|Bojan raring to go after return from injury|
|Babel backs Firmino to shine at Liverpool|
|Falcao must wait to impress, warns Chelsea favourite|
|Bartomeu: Deal in place for Turan|
|Parejo re-signs with Valencia|
|MLS Review: Sounders return to winning ways|
|Klinsmann unhappy with USA performance|
|High hopes for Paraguay - Diaz|
|Gareca: More to come from Peru|
|Gerrard had European offers|
|Argentina out to spoil Chile´s party - Martino|
|Sampaoli: Chile won´t change style|
|Di Maria will come good at United - Rojo|
|Peru 2 Paraguay 0: Gareca´s men finish third at Copa|
|United States 4 Guatemala 0: Klinsmann´s men win comfortably|
|´I’d prefer no-one to know my name´ - Bassett|
|Matthews completes Sunderland move|
|Podolski set for Galatasaray medical|
|Gundogan inspires Dortmund victory|
|Inter confirm Montoya capture|
|Murillo joins Inter, as Kuzmanovic and Obi depart|
|Falcao signing not a risk, says former Chelsea star|
|Deeney agrees new Watford deal|
|Confidence and service the key to Falcao success at Chelsea|
|No bids for ´Chelsea target´ Baba, claim Augsburg|
|Derby swoop for Ince|
|Fiorentina consider legal action over Salah ´no-show´|
|Chelsea the team to beat in the Premier League, says Neville|
|Storari exits Juve for Cagliari|
|UEFA removes FFP restrictions on Man City and PSG|
|West Brom hope for new owners within the month|
|Chelsea agree loan deal for Falcao|
|Kuyt eyes trophies on Feyenoord return|
|Chile v Argentina: History beckons ahead of Copa America final|
|Wallace extends Monaco loan|
|Mihajlovic wants to instill fear factor at Milan|
|Mignolet improving at Liverpool - Grobbelaar|
|Mumbai City name Anelka player-manager|
|Olivia the parrot predicts Japan to win Women´s World Cup|
|Lusitans coach blasts Bilic´s ´lack of respect´|
|Sakho eyes more Europa League wins|
|Gareca wants Peru to keep building|
|Chile ´no chance´ if Argentina produce their best - Diaz|
|Ocampos joins Marseille permanently|
|Europa League Review: Cloud-nine Brondby ignite opening round|