I have been reading the boards here and find the insight very informative. My son is a 10 YO lefty who has natural movement on his fast ball, hits his spots and has been deadly as our closer this season. I havent wanted to mess with him since he was doing so well, but I feel that it is time to add a change up (from what I have read here.) He is a shorter, stockier kid with short stubbier fingers. What type of change up would work best for him? Thanks again and wish us luch, game in a couple hours.