Generally, I think Doug used to teach what I believe people on here refer to as the shove or push changeup. Beginners start out with the ball deep in the hand to get the feeling of pushing the ball with the heel of the hand which helps promote the arm action of the hand leading the forearm in...
So if a girl can throw 50mph, and if she stands in the open position and throws using just arm circles, she will only throw 20mph? That would be the 40% of 50mph. I'm not sure that is correct. Most kids I know can get in the open position and if they really use the "internal rotation" whip can...
Gillis teaches in Michigan and is probably one of the best, if not the best, in this area. From what I can tell on Hillhouse's web site and from listening to him on here, they teach almost exactly the same thing.
During the college world series, Michelle Smith said something to the effect that the pitching hand follows through on a rise ball up to the opposite shoulder (Right handed thrower following through to touch the left shoulder). That isn't how DD was taught to throw the rise. What does every one...