Chelsea suffered their first home defeat since April as Jamie Vardy fired Leicester to a shock 1-0 win at Stamford Bridge on Saturday.
Maurizio Sarri’s side paid the price for failing to convert their chances when Vardy netted early in the second half to hand the Blues their first defeat in five games.
Chelsea’s disjointed display surrendered an 18-match unbeaten run at the Bridge dating back to Tottenham’s victory in April.
Sarri has insisted he does not expect Chelsea to challenge for the title this season, the Italian rating Liverpool and Manchester City as “two steps ahead” of the Blues.
This was further evidence to support Sarri’s concerns, with Chelsea left trailing 11 points behind leaders Liverpool.
Chelsea remain in fourth place in the Premier League, but they are now above fifth-placed Arsenal only on goal difference, leaving them facing a tense bid to qualify for the Champions League in the second half of the season.
Leicester’s first win at Chelsea since September 2000 was well-timed for Foxes boss Claude Puel, who has endured recent reports he could be sacked just 14 months after he arrived from Southampton.
The Blues had not lost at home since 1 April, against Tottenham, and this defeat leaves them level on points with fifth-placed Arsenal, who beat Burnley 3-1 earlier on Saturday. They trail leaders Liverpool by 11 points.
For Leicester, the win moves them up to ninth in the table and is their first victory from 11 matches in London.