Foxes boss Claudio Ranieri, whom Jose Mourinho succeeded in his first spell at Chelsea, continued his fairytale start to life at the club as his opposite number endured yet more misery
Here, Press Association Sport takes a look at how the two managers matched up in the clash
TEAM SELECTION
Both bosses went unchanged from their last games, meaning Leicester's in-form pair of Jamie Vardy and Riyad Mahrez were up against John Terry and Kurt Zouma
For Chelsea, Diego Costa kept his place in attack, despite having scored just once in his last five league games with an out-of-sorts Eden Hazard also included from the start
Foxes midfielder Danny Drinkwater was forced off inside 15 minutes, Andy King his replacement, but Mourinho also had to respond as Eden Hazard went off injured on the half-hour mark, introducing Pedro in his place
Captain John Terry came off just eight minutes into the second half after both Vardy and Mahrez had scored
VERDICT: 'If it ain't broke don't fix it' was the right approach for both managers, who then had to deal with early injuries
DRAW
TACTICS
Mourinho had his defence sit deep to prevent the pace of Leicester's forwards causing too many problems, but they still could not stop Vardy opening the scoring courtesy of a Mahrez assist
Ranieri kept faith with the swashbuckling style which has served his team so well this season and once again it paid dividends
After Terry's withdrawal, Mourinho opted to go to three at the back, with Cesc Fabregas coming on, with his final throw of the dice Remy's introduction with 25 minutes remaining and it was the Frenchman who reduced the deficit
VERDICT: Ranieri kept his side's shape and they were more than enough for the fragile champions, who did not seem to know how to respond to such a lively display
RANIERI
DEMEANOUR
Chelsea manager Mourinho was off the bench and scribbling notes inside the opening 10 minutes before adopting a largely passive expression for large periods of the game
He showed his displeasure with what he perceived as time-wasting as Mahrez was substituted late on
Ranieri, with his animated arm movements, was a constant presence in his technical area, but kept a lid on his emotions
The former Blues boss certainly smiled more than his replacement at Stamford Bridge and is obviously enjoying life more than Mourinho at present
VERDICT: Mourinho has been prowling the touchline with a scowl almost permanently since August
Ranieri was very animated as he cajoled his players during five minutes of added time before punching the air in celebration at the final whistle
RANIERI
DIGNITY
Mourinho was gracious in defeat, shaking hands and embracing Ranieri at the final whistle
The Italian had been dignified in the build-up to the game and refused to make light of Chelsea's current plight and that continued here
VERDICT: Both managers would have had differing reasons to let their emotions boil over, gloating and celebration for Ranieri and further fury from Mourinho, but both kept them in check
DRAW
FINAL SCORE
RANIEIRI 2 MOURINHO 0
Source : PA
Source: PA