He's big on keeping the elbow of the throwing hand below the shoulder during delivery because he says it reduces the risk of shoulder injuries.

Meanwhile, every other coach, trainer, and orthopedic surgeon I've heard speak on this wants kids to keep the pitching hand high (with the elbow, of course, following) fingers on top of the ball and palm facing the outfield (what this guy calls showing the ball to CF).  The idea here is to reduce the bend in  the elbow as you throw and limit stress to the ligaments and growth plates around it.

I'll risk the unsubstantiated shoulder injury over the likely elbow injury when it comes to my kids pitching.   My oldest son drops his elbow all the time, and it's a habit we're working very hard to break.  

His pitching coach was in the White Sox organization but never made it to the ML, he coached Bobbie Brownlie, a 14 year old team that made it to the final four of the national championship, and a couple of the Kean University pitchers who won the Division 3 national championship last year.  I'll take that guy's view on the subject over this yahoo.

I don't trust his insights when it comes to kids, and I don't see what the point of this analysis is when it comes to grown ups.

Which isn't to say that pitching injuries aren't very real, but when a guy is whipping his arm around like that a hundred times every couple days (plus all the off-mound work), it doesn't matter how good your mechanics are, your arm is going to freaking hurt.

And we all know how that turned out - Onion link