Before the first leg of our Champions League quarter-final against Porto, see how well you remember our previous matches against the Portuguese champions.
This is the fifth time we have been drawn against Porto in European competition, all in the Champions League, although this is only the second time we have met in the knockout stages.
That means there are eight previous matches between Chelsea and Porto for you to test your knowledge of in our quiz before the two teams go head-to-head again in Seville tonight.
If you fancy using that Chelsea knowledge to try to win some fantastic prizes, don't forget to enter the Play Predictor before the match.