An important note here is that man10's daughter has a very flexible wrist (possibly also her arm and shoulder). I would say the flexible wrist, in particular, is likely why she threw a screwball early on as sort of a natural pitch for her to throw. As we have seen, she's throwing a good curveball and riseball. I'm sort of thinking that she not go any further down the road of tweaking her mechanics to better her screwball, but rather maybe leave it as is and try to perfect her change-up and/or learn an offspeed drop-curve, given those pitches could be polished without tweaking her foundational mechanics (drive and such).
Man10.... I think you should post her throwing her riseball, her curveball, her change-up, and screwball.
Man10.... I think you should post her throwing her riseball, her curveball, her change-up, and screwball.