Plenty of players have represented both Chelsea and Atletico Madrid. Ahead of tomorrow's Champions League meeting, see how well you know them...
Some of those who share a history with our Spanish opponents have played big parts in Chelsea success during the Premier League era, particularly strikers. They have scored well over 200 Blues goals between them, as well as finishing as our highest scorer in seven different seasons.
We've picked out a few of the better-known players to have represented both clubs in our quiz below. Have a go and find out how well you remember their time at Stamford Bridge and how much you know about their spells at Atletico Madrid, as well as a couple of memorable appearances in previous games between the two clubs. 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, presented by Carabao, for Tuesday's match.
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