Rightly so, though: no pitcher in the system has been treated with greater care than Guzman, yet he's broken down every season but one (and that was a short season). There's no reason to expect he'll ever stay healthy long enough to compile an impressive career: the #1 predictor of future injury for a baseball player, particularly a pitcher, is past injury. I still list Guzman in my Cubs Top Ten (but not Top Five) prospects, but that's perhaps an indictment of my rating system and the current state of the system rather than a meaningful endorsement of Guzman. I was quite surprised to hear MacPhail tout Pinto over Sean Marshall -- and I say this as someone with a slight acquaintance with and a healthy respect for Pinto. But Mitre's appearance didn't surprise me at all. Interestingly, MacPhail described Sergio's sinker as "double-plus". What a far cry from the kid who couldn't throw any kind of breaking pitch when he was with the Lugnuts only 3 years ago. Thanks, Mark. I guess I have been a bit too optimistic about Guzman's health improving. It's a shame that someone so talented has had so many injury problems. Is there a chance a shift to the bullpen (as Tim suggested last summer) would help alleviate some of the injury risks? Would you rate Marshall ahead of Pinto? I think a bit more highly of Pinto since he achieved success at a higher level and hasn't had the injury problems Sean Marshall has experienced this past season. Of course Pinto has to improve his control; Sean's got an obvious advantage over Renyel there. I'd love to see Sergio win the fifth starter spot this upcoming season.