I agree, there are exceptions to every rule. But I would say that learning the windmill is one of the harder and un-natural movements in sports. It can take a year just to develop muscle memory for the movement before starting to get the most out of it.
That is why any girl on the field cant just go up and hack pitching in a game if needed to . I would say it takes minimum 3-4 years to become a very good pitcher, even with talent for it and good instruction. So is it possible? yes. Is it smart to wait ? Absolutely not. Since girls get recruited at 16 (or earlier) they generally need to be pitching at 12 yo if they want a shot, and 10-11 is even better.
I would agree that it is not necessary to start before 11 though.
That is why any girl on the field cant just go up and hack pitching in a game if needed to . I would say it takes minimum 3-4 years to become a very good pitcher, even with talent for it and good instruction. So is it possible? yes. Is it smart to wait ? Absolutely not. Since girls get recruited at 16 (or earlier) they generally need to be pitching at 12 yo if they want a shot, and 10-11 is even better.
I would agree that it is not necessary to start before 11 though.