@rarmstrong7777: “is there a manager equivalent to WAR? Could there be if there isn’t?”
There isn’t, and there probably can’t be. The manager’s job is done largely at the margins and behind the scenes, so it’s hard to tell if, for instance, Joe Maddon bringing snakes into the clubhouse has an effect on his team’s performance. Anyone who’s ever had a job knows how much better life is when you have a boss you like and respect, so I don’t doubt that there’s an intangible benefit to having a good manager. How much of a benefit is a harder question to answer. I’ve heard it said that three-time Cy Young winner and Hall of Famer Jim Palmer wouldn’t have stuck in the majors if not for the influence of Earl Weaver. So it’s possible that Earl Weaver was worth 68 WAR to the Orioles just because he mentored Palmer. Or that could be bullshit.