In this quiz, we give you the horses, and we want you to tell us which is the highest ranked among the answers given, according to LONGINES for the Flat horses, and Timeform for the Jumps horses - as of the 18th November 2018.
There is only one correct answer, so if you are ready, put your form and notebook aside and find out how much you know about the ratings system. You may even surprise yourself.
Good luck.