Just 12 players have made a solitary appearance for Liverpool in the Premier league.
Some of them have gone on to have excellent careers, others have disappeared and others you might not have even heard of.
Indeed, only the most knowledgeable Liverpool fans will be able to get 12/12 in this wickedly testing Liverpool quiz.
They don't have to have started the game, just an appearance off the bench will do.
Oh and here's a club, two of them are still with the Reds at the time of publication.
So you have 10 minutes to name all 12. Share your scores in the comments below or find us on social media and let us know how you get on.
Good luck. You're definitely going to need it..
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