I'm sorry, but I really find this to be absurd. You can't chart out all of the possible scenarios that can happen in a game, and there are other (season-long) effects to cosider, like how often to use a guy, etc. The whole point is, if your manager would need one of these charts, he sucks. He doesn't have the instincts or intelligence to be managing a major league baseball team. There are probably a lot of people who can routinely make these types of decisions without a chart. Good managers just know. Obviously there would be more conditions like a pitch count within a week and asking how the reliever was feeling day to day. I am sorry, but I find it surprising that you talk about SABRmetrics in one sentence then turn around and poo poo a leverage index. http://www.insidethebook.com/li.shtml