Managers in baseball have an extremely short shelf life with the exception of Connie Mack. Mr. Mack managed the Philadelphia Athletics for the first 50 years of their existence, but Mack – who always managed from the bench in street clothes – happened to be the owner of the team. Mack had also previously managed as a player-manager for the Pittsburgh Pirates back in the dusty days of the late 1890s.
Boston has an illustrious history of disposing of managers rather routinely with the possible exception of Joe Cronin. Cronin was acquired from the Washington Senators in a purchase/trade agreement by Tom Yawkey.