Thank you for the replies. For some reason, if I click on reply, it Likes the post, so I'll give additional details here:
1. It does sound unbelievable, which is why I am reaching out here to make sure I make the right call on how to move forward. There is always more to the story - especially the coaches side, but I can only go off what I know from my son and other players on the team.
2. I have not personally heard the coach interact with my son. Other players have corroborated his story, so I don't believe my son is lying.
3. I have been to every game he has caught and keep track of passed balls/wild pitches/catching errors to make sure he is accountable for his own play. He needs improvement like all players his age. I would agree that the coach believes he is under-performing, but the verbal abuse/humiliation is my issue.