Dudeee. I know how to answer your question. I know how to directly train individual pitches & their velocity/break. I had a CAP pitcher in '15 who threw a 96 mph 4 seam, a 94 running FB & an 83mph Vulcan change, the Fastballs could touch 97-98 & 95-96 respectively, change never faster than 85. It was filthy, & then I ruined it by accident months after returning to the game from a huge break....fed him a bunch of pitchers to max out his H & K/9, forgetting why he was already perfect as is....then i was throwing 98-99 with an 88 mph change.... Ruined things for me
Anyway point was I'll try to answer this at my earliest convenience.... Totally not in the mood atm, & I'd have to check up on the process to make sure nothings changed. But it has to do with feeding him pitchers with low velocity, relievers with a hard fastball but no change up, & pitchers with just a really slow change in general....also, pitchers who have a Primary pitch that ISN'T the 4 seam....so a sinker baller, a change up or 2 seam pitcher...some even have a primary Curve (Tyler Duffy). You can train individual pitches in that way...You have to be careful though....you'll have to hop into CPU games to check his stuff yourself, & often, make sure things are progressing as planned