Thanks for your son's story 1ST&3RD. That's a really nice outcome and, coincidentally, Trinity College is on my son's radar for his HF camp at the end of June if he's ready. Like your son, that would probably be the one showcase we would choose not to miss even if all other plans fell through. Might be a little more difficult since my son essentially plays catcher only, and considers his defensive skills the stronger of his recruiting tools, but I think we'd make it work somehow.
As a little update, we had a second opinion yesterday and it was in alignment with the initial assessment which was a shoulder impingement. He got a steroid shot, prescription nsaids, and had his first PT appointment today. He's also got an MRI scheduled for tomorrow for what hopefully amounts to peace of mind. If all is correct, and goes well, we're cautiously optimistic that he may be able to resume throwing in 2-3 weeks based on feedback from the doctor as to his progress. Thanks again for your story!