4) Chelsea v Napoli, 2011/12 round of 16
The Blues had lost the first leg 3-1, and Andre Villas-Boas had been sacked in between the two matches. Roberto Di Matteo then came in and turned things around. The Stamford Bridge outfit won 3-1 in normal time and then Branislav Ivanovic completed the comeback in extra time. They went on to win the Champions League against all the odds.