A lot of players do the conventions and things like that for their teams where they sign autographs. Something like a jersey might be tough to do at a game. Maybe if you wrote the team of the player, they could tell you how to go about getting it signed?
I used to mail cards in the past, and had decent success with it. It's been years ago, so it seems like that has changed judging by your experiences.
Yes doctor, I am sick.
Sick of those who are spineless.
Sick of those who feel self-entitled.
Sick of those who are hypocrites.
Yes doctor, an army is forming.
Yes doctor, there will be a war.
Yes doctor, there will be blood.....