It's funny that you talked about a closer because apparently the Yankees aren't 100% convinced David Roberton can take over for Mariano Rivera (I've gotta say I'm a little surprised)
I don't think he's ready. Nathan is the best choice, and he's a local boy. But, it seems that everyone has him going to Detroit.
It's not a knock on Robertson. I believe that following Rivera and Jeter will be extremely difficult, and for reasons that go beyond performance on the field.