Even if he's ready, I think the pen is the best spot for him. Wouldn't want to rush a young guy, even though he's full of piss and vinegar and wants to contribute. If he's needed in the playoffs (yes the mother f***ing playoffs sir), easing him into an inning here and there would help the team and would reduce the risk of any set backs. However, he could be used as a starter only if one of the 5 go down ... bit of a depth issue, no?