Papelbon should certainly be a SP. Maybe not this season, or at least not right away but his value to the team is much higher as SP. Hes only started 3 MLB games and has been impressive, 2.25 ERA in 16 innings of work, granted a small sample but hes obviously shown he can pitch effectively as MR/CL and im sure he will translate well as SP over a season. And it helps to have a guy in hte minors who could be just as dominant as CL named Craig Hansen.