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Certain shirt and number combinations strike fear into opponents while inspiring home fans - like seeing a Barcelona strip with 10 on the back and knowing it's going to be a long 90 minutes.
Well, these are 20 of the best examples from various Premier League clubs. Not every one is an all-time great - but each remains a hero to their particular club, from Arsenal's No 14 to Man City's No 42.
Each shirt is uniquely associated with that player/club combo in the Prem.
So we've avoided numbers such as Man United's iconic No 7, which could be any legend including David Beckham, Cristiano Ronaldo or, erm, Alexis Sanchez. OK, not him.
Get identifying players from the shirt number below, let us know your score out of 20 - and tag a mate to see if they can beat your total. Good luck!
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