Interesting note (that we all already knew about) coming from MLBTraderumors.com
"Earlier this week, the Yankees announced that Joe Girardi will not return to manage the Bombers next season. But as Tom Verducci of Sports Illustrated points out, 53-year-old Girardi might not have lost the job due to the team’s performance or his body of work. The three oldest managers in baseball (Terry Collins, Dusty Baker and Pete Mackanin) all lost their jobs this season, and John Farrell (55) will be replaced by the 42-year-old Alex Cora. This points to a trend in baseball wherein the game is being run by younger players, and it might just be that the ability of younger managers to connect with those youthful stars is being seen as a major asset. Fluency in analytics is also becoming increasingly vital to the manager position. As Verducci also points out, World Series skippers Dave Roberts (45) and A.J. Hinch (43) both fit the bill for this type of “modern manager”. With Girardi lacking the youth and analytic mindset required for the new mold, the Yankees may have simply decided he is no longer relevant in today’s game."