I would argue regardless of the xFIP- comparison that there should have been an expectation of improvement from the staff with the rotation overhaul, not a slight regression. Peripherals are great and sabermetrical measures have come a long way toward giving us better ways to analyze what we see, but they're too often interpreted to be the whole story, rather than just part of the story. There are reasons beyond random chance that some pitchers consistently outperform their peripherals and some pitchers consistently underperform their peripherals. I don't think there should have been expectation of improvement from a rotation that was hoping to employ three first full season starters. Even if they are "more talented" than the guys they were replacing, young talent doesn't always equate to immediate results. It turning out how it has was always a reasonable possibility & that we are still in the thick of the postseason picture with two of our three young starters underwhelming speaks to the strength of the organization as a whole, to me at least. I think using the term "arm talent" was a mistake on my part. To generalize, I don't think we have enough pitching. Even if the young pitchers struggled, we were told repeatedly we had enough depth to cover that. Now people and screaming for Aaron Wilkerson to get a shot, that is the depths we have sunk to. I don't know how they are keeping it together but you are correct in that they ultimately are. Still, I can't help but sense impending doom with this staff.