One of our girls asked me today, "why can't we step back in most sanctions, but can in school ball, and why don't they in college"?I'm not sure if it has ever been properly explained to me. Does anyone know why? In an intelligent detailed response?
Well, you still may not.
I agree with the context that HS has more limited access to players and the allowance for the step back is for participation purposes.
However, I question that the ASA or NCAA did anything. I can document the requirement for both feet in contact with the pitcher's plate as early as 1936.
Softball Official Rules (1936), page 6, Rule 8:
Position of Pitchers
(a) Preliminary to pitching, the pitcher shall take his position facing the batsman, with both feet squarely on the ground and both fee on top of the pitcher's plate. The ball shall be held in both hands, in front of the body.
Now, the ASA (NCAA used same rules) probably changed it to just "contact", but both feet on the PP has been around for at least 74 years.
In our state you must START with both feet on rubber. But can step back during delivery. Go to your state HS governing site ( for all athletics ), they will have info online. Ours does.