Originally Posted by 2020dad:
…However I do let them know that their current level of success is not adequate for playing time. …
I’m not sure how “level of success” equates to mechanics. When I hear success, I equate it to performance on the field such as ERA, WHIP, K:BB ratio, or something else measurable. But when I read your post, I got the sense that you were saying if a pitcher doesn’t have mechanics you feel are “correct”, he won’t be getting much time on the bump.