Lampard or Terry? Torres or Fabregas? Crespo or Veron? We have been blessed to have had so many international players over the years, but do you know which ones made their debuts first?
That's the subject of our latest quiz testing your knowledge of Chelsea players past and present. There are 10 questions for 10 different countries, and you simply have to click on the name who you think made their international debut the earliest in time.
This is a tough quiz so huge respect to anyone who gets full marks! Good luck, and don't forget to share how you got on...