[greymule]

The only problem with this is that the organization doesn't have the authority to waive the rights of its members or their associates, in this case, most likely their insurance carriers.

Quite true. For what's it's worth (probably not much), each player also signs a document that says he cannot make any claims regarding jewelry-related injuries. Still, if that player gets a slashed face from somebody else's sharp ring, I suspect that piece of paper will be worthless.

Incidentally, we're instructed to allow no jewelry at all, regardless of what the book says about the umpire has to judge it to be dangerous. But in the big slow pitch tournaments, most of the muscle men come to bat laden with chains and earrings, and nobody ever says anything.