In theory, but they rarely end up doing that. And leaning heavy on the "big boys" early isn't ideal either, as those guys usually don't go long in games anyway, and need to be conserved a bit. And wouldn't they want to give Wells rest when they can, considering his lack of 200 inningness? Plus, Lilly is out at least a month, and it's really hard to rely on a pitcher to come back on time and at full strenght from surgery. And you already have a situation where the 4th starter to start the season is in doubt, let alone the 5th. Zambrano, Dempster, Wells, who and who?