On every date between now and Christmas, we will bring you a quick quiz on a famous player or players who have worn that number on the back of their shirts for Chelsea.

Today you have questions on no less than five players to test your knowledge, with current holder of that shirt number, Romelu Lukaku, joining the likes of Hernan Crespo, Gianluca Vialli, Jimmy Floyd Hasselbaink and Fernando Torres in today's quiz.

That's quite some list of number nines, so try our quiz and find out how well you know them. Just like with an advent calendar, you can come back and open a new quiz every day until Christmas Day. Unfortunately we can’t give you all a chocolate to enjoy with your quiz, but feel free to treat yourself if you score high. Good luck and merry quiz-mas!