Two first half goals from Leicester City’s Okazaki put Claudio Ranieri’s men ahead in the first forty five, but Antonio Conte’s men started the second half in high spirits and equalized with fifteen minutes to go as Gary Cahill scored first then Azpilicueta’s goal restored parity.
Disadvantaged in that way against an opponent whose play had gained momentum through the second half, Leicester would have found it tough to survive the full period of extra time.
As it was, Chelsea effectively drew any sting the home side might have had left when Cesc Fabregas scored in the 92nd and 94th minutes.
The Spaniard swept the ball into the bottom left-hand corner of the Leicester goal after a backheeled pass by substitute Eden Hazard had wrong-footed goalkeeper Ron-Robert Zieler, then stepped up to fire home again after a cross from the right ballooned up off a defender before Danny Drinkwater headed it straight to the Chelsea player.
Wasilewski’s red card almost certainly tipped the balance after Chelsea had finished normal time looking stronger.