LL -- I thought he might be, He's seems kind of inconsistent at times, one pitch he'll stay closed all the way to stride foot plant and other times he'll open up early. He's not had any sore arm issues yet (thank God) but I'm very cautious as are his coaches in keeping him on a strict pitch count. I've heard to many stories, including my own (another story), of hurt arms that go on to discourage kids from continuing on. It seems TJ surgery is way to common now at this age group. It's unfortunate and one reason why I'm here now asking for any good advice I can get to not only improve his performance but hopefully prevent injury by understanding good mechanics.
Thanks for your post! If he touches 80 this year I'll be one happy father!