I'm weary of Zimmermann's injury but you could clearly see he was going to be a stud in the Majors during his time here.
Not as sold on Martis. He started hot like you mentioned and then flamed out and then did poorly in AAA for the rest of the season.
Still I like his makeup and believe he can pitch in the Majors at some point. He's still a young one.
I'm high on Detwiler. Good stuff and he carries himself like he belongs up here.