In a perfect world, the Phillies would not need to rely on replacement players in 2012. Everyone on the roster would stay healthy and perform well, and all the prospects in the minors would stay where they are.
But, seeing as how this is not a perfect world, some of the Phillies' minor leaguers will have to step up this season. From injuries to Ryan Howard and Placido Polanco to an unsure back-end of the bullpen, the Phillies may have to call up some prospects to fill holes.
Not all prospects are ready, though. Baby Aces, like Trevor May and Jesse Biddle, touted as they may be, are nowhere near prepared for MLB action.
This list includes seven prospects who are ready and likely to help in some way in 2012.