Not quite sure how I'd handle that I would lean towards the not letting him play with that kind of brace. I have been an official for Illinois Special Olympics basketball(I know it's a little different situation there than this is), but I seem to recall some bigger guys in the games that would wear a boxing head gear and some sort of soft brace for an arm or something. I would be inclined to think that there is some kind of brace out there that didn't have the metal piece to it that would be suitable to protect the kid.

I just want to make it clear that I think it's great that the kid is able to compete with his friends at a normal level, but there has got to be some way to protect him without going against the rules and endangering another kid.