Exactly. You don't let a pitcher that good walk, and leave you with a rotation full of question marks. I DO, however, think Rich Hill will be the man for years to come - but he needs somebody of equal caliber to compliment him on this rotation. That's the problem. Guzman can be inserted, but he's obviously not gonna replace Z. I was really hoping for Prior to be pitching in some capacity, but that's pretty much dashed. That said, I think Z can net the Cubs someone like ARod or Cabrerra, and I think that can't be ignored.