MTR wrote: Then you may be shocked how often I see pitchers correct themselves once being called illegal.
Yes, but do they pitch with the same effectiveness? That is a more important question. Correcting the issue can be done, but correcting the issue and still maintaining the same quality of pitches is another. This is where routine and muscle memory kicks in.
Either way, it is still no excuse for the player, parents, and coaches to allow or not be aware of illegal pitches by their pitchers.
It is also no excuse why the umpires don't call it when they see it too.