I have been a member for a short period and have not seen any discussions about the back door curves and screwballs. My oldest DD used to use the back door curve and it was a very effective pitch for her. My youngest DD had a very effective back door screwball. Does anyone have an opinion on the effectiveness of the use of the back door pitches?I believe these to be somewhat forgotten pitches being taught to advanced pitchers.I welcome your comments on the subject.