[Fluid]

I believe you can put 23 on a shirt. You just cannot put 23 in the colors of the team that player, played for or associate it in any way with that team or player.

Same goes with Nascar numbers. Im not a Copyright lawyer so you might want to double check but I believe this to be true.

 

[Fluid]

I think its just stupid. Essentially your breaking copyright laws everwhere you go, filling out forms, putting in your age