I don't have any answers for you, but I'm in the same boat. My son isn't PG (at least that I know of), but he's the same way with sports.
He has amazing fine motor skills, can build anything in the world with K'Nex, Legos, etc. But the kid can't grasp gross motor skills for anything. He's ok in swim class, but pretty much messes around the entire class instead of paying attention. As for throwing or catching a ball, nope. We have he and his sister signed up for baseball and golf right now. Every other kid "gets" it, but it doesn't seem like he does...
I'm looking forward to hearing everyone's replies as well. Thank you for posting this!
