#3 Chelsea 4-1 Napoli (Round of 16, 2nd leg, 2011-12)
Chelsea faced the daunting task of overturning a 3-1 deficit. They were up against a formidable attacking trio of Cavani, Lavezzi and Hamsik who tore them apart in Naples.
Drogba got the opening goal and Terry netted just after the break to give his side the edge by virtue of their away goal. But Gokhan Inler's goal was a dagger to Chelsea hearts as it meant the Blues needed to score twice to go through.
Lampard converted a penalty but both sides were level after 90 minutes, and extra time commenced. In a pulsating and open game filled with chances, an unlikely hero in the form of Branislav Ivanovic rifled home the winner to prompt euphoric celebrations.
This win gave belief to the players and interim manager Roberto Di Matteo to carry on and they achieved great things that season.