I’m not sure why Robb Nen didn’t get into the Guide. Maybe it was the multiple surgeries he’s had since he last pitched when it counted. Which is why a comment like the following would have been appropriate:
Rotator cuff surgery last spring means he should be throwing again by the start of training camp, but it’s unlikely he’ll be pitching (note the distinction) until well into the season. And that’s only if he stays healthy, hardly a sure thing.