A rip off of 'Roogie's Bump'
This is a straight rip-off of a 1950's film called "Roogie's Bump." The film is about a boy who is an outcast with the neighborhood kids, and thanks to the ghost of a long-dead baseball player, finds he has a strange bump on his arm that allows him to (gasp!!) throw a baseball with amazing speed and strength!! He is so good, in fact, that the Brooklyn Dodgers hire him to pitch for them. Unfortunately, the bump doesn't last forever, and he quickly finds himself returned to a normal childhood. But hey, at least, they had professional sports players in cameos.
Sound familiar??