In adddition to needing great stuff to accomplish what he did this year, you also need a closer's mentality. If he's going to be as effective as a starter he'll need to refine his breaking pitch. Also, his closer's mentality, which is as tough as I have seen, will be lost with him in the rotation as he is unlikely to finish any games. I think we may all be bitching and moaning when he looks like Beckett as a starter and we have some average or better than average closer giving us 9th inning heart attacks.