Chelsea missed a chance to go second in the Premier League as a resolute 10-man Leicester side held them to a goalless draw.
The Foxes pressed on impressively until Ben Chilwell was shown a second yellow card for a foul on Victor Moses.
But the champions failed to take advantage.
Claude Puel welcomed Jamie Vardy back after two games out with a groin injury and the England striker, along with Riyad Mahrez, caused Chelsea lots of problems.
The Foxes had the better of the chances and Antonio Conte reacted by replacing Eden Hazard, ineffectual with Leicester’s intense closing down robbing him of service, and Cesc Fabregas with Willian and Pedro before the hour mark.
Chelsea’s fourth successive draw in all competitions could see them slip to fourth by the end of the weekend, while Leicester will take heart from a thoroughly deserved point at Stamford Bridge.