This thread is *NOT* for the advanced pitching coaches. One of the goals of this forum is for parents to learn enough to teach their DD the basics. If the DD likes pitching and has some talent for it, then the parents should find a good pitching coach.
This thread is for new parents trying to teach their DD how to pitch. This thread is about basic, elementary body position and arm position.
In pitching, there has to be a close synchronization of the body and arm. If the arm and body are not in synch, power will be lost, reducing the speed of the thrown ball.
This is just the basics. There is more to arm-body synchronization, but for a newbie, this is what you need to know. As a former Crazy Daddy, if I had known some basic information when my DD started pitching, it would have saved me money, time and grief.
Rick Pauly has studied this extensively. He is the true expert on this.
First, you need to understand "the clock" of pitching The attached photo shows the great Sarah Pauly with a clock around the photo. The picture shows Sarah's right arm at 12 o'clock (simply referred to as "12") and her left arm at 3 o'clock.
For a right handed pitcher, the progression is viewed at 3 (right arm pointing at catcher), 12 (ball at highest position), 9 (right arm pointing at 2B) and 6 (at ball release).
The elite and most "good" pitchers are very consistent as to arm position with respect to the body position.