It's a bit more complex than that or every pitcher who throws 95mph would be in MLB, striking out hitters left and right. Maybe Tonkin needs to take a mph off his fastball to get more movement on it. Maybe that causes Tonkin to lose the feel for the pitch, making that adjustment useless overall. Maybe he needs to change his grip but a grip change causes wildness that he can't seem to overcome. There could be many reasons his fastball is straight and there isn't a magic "fix it" button that turns him into a quality MLB pitcher just because he throws hard. Velocity can't be taught and that gives Tonkin a leg up over many other pitchers vying for MLB jobs. On the other hand, velocity in itself doesn't guarantee success. There are mechanical, grip, arm slot, etc. factors and maybe the Twins have tried them all but none of them seem to work for Michael. It's all too easy to lay blame with the coaching staff for any problems a pitcher may have but that ignores the fact there is a human being throwing those pitches who may be unable or unwilling to learn what is being taught.