Pseudo's response last night had the gist. "Long leash" wasn't a very helpful phrase to use because it carries multiple meanings. In-game, yes, a pitcher likely won't be able to shrug off a poor beginning to his stint on the mound. "I just don't have a feel for my curveball today," if that's the kind of excuse that's given - "well, you'd better find it, because I don't have someone else I can bring in right now" would be the response to that inanity. A pitcher who is brought in had better produce, but if he doesn't, he may just have to gut it out. But, from the medium-term perspective, a guy can't just be shoved to the more remote part of the bullpen and used only in blowout situations while he works out his problems. He has to be replaced by another pitcher, and either goes to the IL, or to AAA if he has options remaining, or else will have to be disposed of in some manner. Or else, a 12th pitcher is brought in, probably at the cost of losing a position player to waivers, or else at the cost of putting a useful position player like Cave or Astudillo at AAA. We won't go with 11 pitchers for very long in any case, but when we go to 12 the same logic will apply, because the trend has been toward 13.