We go into Sunday's match against Luton Town having not lost to a Championship team in the FA Cup since 2008, but how much do you know about the previous games during that run?
We host Luton at Stamford Bridge in this season's FA Cup fourth round at midday on Sunday and another win would make it 23 years since we have been eliminated from the competition by side from England's second tier, as well as booking our place in this season's last 16.
Since that last defeat to a Championship team in 2008, we have faced second-division opposition 22 times in the FA Cup, including three replays, and made it through to the next round on every occasion. Do you remember all those victories? Try our quiz and find out. Good luck!
If you fancy using that Chelsea knowledge to try to win some fantastic prizes while competing against your fellow Blues fans, don't forget to enter the Play Predictor for Sunday's match.