Non-Phillies idea here, but I was wondering if it would make sense to platoon pitchers.  If you had Micah Owings on your team (and maybe Dontrell Willis of old), you basically put on in left field while the other pitches and switch back and forth between left handed and right handed batters.  The platoon advantage you get might be worth the 1 less bat in your offense even if you don't have a Micah Owings.