Chelsea endured a third successive goalless draw in an enthralling encounter against excellent 10-man Leicester.
Antonio Conte had been wary of the Foxes and his concern proved well founded as the movement and energy of Riyad Mahrez, Jamie Vardy and Shinji Okazaki troubled Chelsea.
Leicester were relentless, playing like champions, with the intensity of their pressing forcing mistakes.
Ben Chilwell was sent off for two bookable offences in quick succession, leaving the visitors down to 10 men with 22 minutes remaining.
Yet still Chelsea, who had won their previous seven Premier League home games since September’s loss to Manchester City, could not break the Foxes down as the Blues followed stalemates with Norwich and Arsenal with a third in a week.
Conte tinkered with his defence for the visit of Chelsea’s predecessors as champions.
David Luiz was Conte’s first choice in the centre of his back three in last season’s title-winning campaign.
Now the Brazilian is apparently not even second choice as Gary Cahill was deployed in the central role, with Andreas Christensen rested on the bench alongside Luiz.
Cahill lasted just 33 minutes before going off clutching his right hamstring.
He had been given a torrid time by Vardy, who showed no signs of the groin injury which deprived him of a return to his former club Fleetwood a week ago.
The Foxes cut through their hosts time and again, with left-back Chilwell creating chances for Okazaki and Vardy, who next dragged an effort wide across goal.
Wilfred Ndidi’s free header was saved by Thibaut Courtois before Cesc Fabregas forced a save from Kasper Schmeichel at the other end.
Only a well-timed Cahill tackle stopped Mahrez from shooting following a mazy run and then Eden Hazard should have punished the Foxes at the other end, only to shoot tamely at Schmeichel.
A race with Vardy culminated in Cahill stretching for the ball before hobbling off. Christensen went on, with Luiz not even asked to warm up.
Mahrez then drilled the ball across goal, but there was no-one in a black and gold shirt to convert.
Schmeichel saved from Fabregas before the break and Leicester continued to pressurise their hosts on the resumption.
Vardy nicked the ball off Christensen and found Mahrez, who initiated contact by kicking the Denmark defender.
The Foxes forward went to ground, seeking a penalty, but referee Mike Jones was unmoved and not inclined to dole out a yellow card for diving.
Mahrez next blasted a shot into Christensen and it deflected wide.
Conte had seen enough and made his final two changes. Willian and Pedro were sent on for the ineffective Hazard and Fabregas.
Willian lured a foul from Chilwell, who was booked after 63 minutes.
The left-back then caught Victor Moses late and was sent off after 68 minutes.
Long-range shots from Kante and Tiemoue Bakayoko were symptomatic of Chelsea’s struggles to break Leicester down.
And Schmeichel turned a Marcos Alonso free-kick behind for a corner in stoppage time as Chelsea missed their last chance.
The away side looked the more likely to score and were unfortunate not to get on the score sheet before Ben Chilwell received a second yellow in the 73rd minute.
Here, we rate the Chelsea players.
THIBAUT COURTOIS: Despite Chelsea being under pressure from Leicester over periods in the first half in particular, the Belgian didn’t really have a save to make. 6
CESAR AZPILICUETA: Had his hands full with the likes of Jamie Vardy and Riyad Mahrez but did well to keep up and didn’t put a foot wrong. 7
GARY CAHILL: Struggled with Vardy’s pace and movement early on. Pulled his hamstring and had to be replaced after 33 minutes. 5
ANTONIO RUDIGER: A bit clumsy in a tackle, especially when trying to contain Mahrez but didn’t do too much wrong, was good in the air and made a few clearances. 7
VICTOR MOSES: Provided plenty of width down the right and managed to get a couple of shots away as well. 7
TIEMOUE BAKAYOKO: Didn’t have his shooting boots on but insisted on having a go more times (3) than any other Chelsea player anyway and was wayward at best. Was better at breaking down a few Leicester attacks though. 6
N’GOLO KANTE: Was buzzing against his former side, driving forward and making some good tackles as well. Was in danger of being a little too enthusiastic though and was walking a tightrope after his booking. 7
CESC FABREGAS: He wasn’t at his best in terms of passing, providing just one key pass and registering an accuracy of 76.9%. His best moment was a shot from distance which was tipped over the bar. Was replaced in the 58th minute. 5
MARCOS ALONSO: Had one good effort from a free-kick at the death but contributed little other wise. 6
EDEN HAZARD: Was excellent at the start and had Leicester players falling over themselves but couldn’t find a killer pass and managed just one shot. Was hauled off before the hour mark as he began to fade. 6
ALVARO MORATA: Another disappointing performance. Had one good run in the first half when he did well to win a corner. Other than that, his touch was poor and decision-making just as bad. Couldn’t register a single shot throughout the game. 4
ANDREAS CHRISTENSEN (for Cahill 33′): Replaced Cahill in the first half and was solid. Did well not be lured into a challenge when Mahrez tried to win a penalty off him. 7
PEDRO (for Fabregas 58′): Couldn’t affect the game enough. Had one shot at goal but didn’t look threatening. 5
WILLIAN (for Hazard 58′): Looked like one of the players who could snatch something for the hosts but wasn’t to be. 6
Lacazette hit the ground running following his £50million move from Lyon last summer, netting four times in his opening six league fixtures for Arsenal.
But the France international, 26, has now gone nearly 10 hours without finding the back of the net – he last scored in the 3-1 defeat against Manchester United at the beginning of December – and he was largely ineffectual in the Carabao Cup semi-final at Chelsea before he was substituted in the second half.
Lacazette, however, is likely to be given another chance to recapture his early-season form when Arsenal travel to Bournemouth in the Premier League on Sunday.
Wenger could be without Mesut Ozil as he battles a knee issue, while the ongoing uncertainty over Alexis Sanchez‘s future may result in him being unavailable. Olivier Giroud, who has been sidelined since Arsenal’s EFL Cup win over West Ham last month with a hamstring injury, will also be absent for a further fortnight.
“(The lack of goals) certainly affects him (Lacazette) a little bit, but I am not worried,” Wenger said. “He was diminished a bit physically on Wednesday night against Chelsea because he was not at his best before the game, but he was as well very isolated.
“It was a difficult game for a striker because he did defend a lot, but overall I don’t worry that he will come back and it’s in cycles. At the moment he’s going through a cycle that is a bit more frustrating for him.”
Arsenal return to Bournemouth for the first time since their thrilling 3-3 draw on the south coast last season.
Wenger’s side were left stunned as the hosts raced into a three-goal lead, but the Gunners completed a dramatic comeback when Giroud netted a stoppage-time equaliser.
Bournemouth have won only one of their last 10 matches in the Premier League and have slipped to 16th.
But Wenger is anticipating a tough time of it from Eddie Howe’s team as Arsenal bid to get their top-four ambitions back on track.
“Last year was a spectacular game, where it finished 3-3,” Wenger added. “Basically what can happen in the story of a game is that you can go through all kind of states of mind – the nightmare, the relief and then the frustration – because we could have won the game in the end.
“They are a team who have a bit more difficulty this season but down there they can make it difficult for anybody.
“The league is divided into two now. As long as we have a group of seven or eight teams fighting for the top four, the rest are basically fighting to stay in the league, and as long as the positions are not settled, every game will be a cup tie.”