I didn't say anything about management telling a guy to do something. But management sets a tone and provides resources and should make sure players are using every resource possible. Management can act in a spectrum from laissez-faire to micro-managing. Good management knows how to motivate, provide resources for players to use for improvement, and set a tone for expected behavior and effort. Poorly managed teams allow players to be sloppy and lack motivation. I don't assume all athletes are self-motivated or don't need some kind of coaching to help them develop their game, even at the major league level. It is management's ultimate responsibility to get the best out of their team with all the skill, tools, and experience at their disposal.