It's a fair question but I think there is a big difference. If you have constructed your bullpen, as a lot of teams do, to have a setup man and a closer who are markedly better than the rest of the options, then in a one-run game having your starter finish 7 instead of 6 is a big deal. But that raises the question, is Burton as your setup man that good? And that's where Gardy may have specific information that trumps my analysis: if he and his coach don't think he's in midseason form yet, or is nursing an unpublicized injury, or any of various other reasons, then maybe Perkins is the only option who is clearly better than a starter who has put up 7 innings. So that's an argument in favor of what Gardy did. I'll turn the Our Bullpen Rocks argument on its head, though, and say that if we *don't* have two pitching options better than a guy with Correia's track record, to pitch the 8th and 9th in specifically a 1-0 game, maybe Our Bullpen Sucks. You can manage by looking at the statistics, but what most statistics can't convey is the additional information that in *this* game Correia has pitched 7 innings in unusually good form. Maybe someone has performed a Bayesian kind of analysis and concluded that no, pitching results in the next inning are more like a Markov process and thus memory-less, but I don't remember it. If your pitching coach and your own eye don't tell you that he's starting to physically wear down today, then that also argues in favor of the manager's chosen strategy, that a reliever would not be an improvement. Finally, since I'm at it, I meant to add in my earlier post about 1-0 games being unique, that they are different from similar games in two contrasting ways. If it's a shutout but is 3-0 instead of 1-0, then you have a lot more latitude to give your starter the chance to complete the shutout. If instead we are talking about 1-run games, a 3-2 or even 2-1 game is different in that your starter has done at least something to merit his removal when you give him the bad news, whereas the 1-0 variant means you are really the bad guy for taking him out. Being in a 1-0 game definitely is the harder of both worlds, for the manager. (And then there's the 0-0 games - remember Tom Kelly's quote after leaving Morris in for one more inning, "hey, it's only the 7th game of the World Series". )