If Mark Rogers wasn't so resistent to change and would simply realize his mechanics were terrible, he might not have these shoulder issues. I'm fairly certain none of us know how resistant to change, if he was at all, Rogers was to his new delivery. Sometimes it's just a matter of it being a hard task, that takes time to get correct and fine tune. I feel pretty confident that Mark being taught that he needs to increase his stride, plus adjust his style of pitching, as well as focusing strictly on developing his weaker pitches was a pretty full plate for an 18 year old kid. I don't think it's outside the realm of possibilities that the Brewers might have been trying to cover so much material that details were lost and that might have had something to do with his eventual shoulder problem.