Not sure about the rotation, but why the heck not the bullpen? The Twins never used to be shy about getting their guys in those 5th starter - relief spots: Perkins, Duensing, Swarzak, Manship, Robertson, Burnett, Crain, Mijares, etc. Most those guys debuted 23-24 ish, and some went on to fine careers. Bard should be up, and Curtiss too. Two of the better guys in the pen currently also follow that pattern, in Duffey and Rogers. Going to the scrapheap for retreads works once in a while, Kintzler, Burton, Fien, but I would give priority to the guys drafted and developed here. All the more so for spot starts: more Felix, less Tepesch.