Managers should not be former players.

MLB has moved beyond former players as general managers. Now teams hire business or statistics hot shots to implement the new concepts and search for even newer ones to provide their teams with a competitive advantage. However, even these new type GMs have not completed the transition. Teams continue to employ former players as field managers. Even the young managers like Joe Girardi of the Yankees use the same old tactics as their peers who are 25 years older. The common denominator is that they are all former players who are expected to behave within about one percent of conventional wisdom. That needs to change. Head coaches in the NFL and NBA are much more likely to have never played in those leagues. A few years ago I checked all three sports and found these percentages who had NOT played in their respective leagues: NFL 70%, NBA 30%, MLB 10%. MLB must modernize on the field to the reflect changes in the front office.