Notre Dame is two wins away from a college football national championship, but the Fighting Irish better get it done this year, because they are one of our top candidates for regression in 2019.
One of the only ways to remain a factor in college football year after year is to get old and stay old. You want senior leadership on the roster, but too much of it means a bit of a rebuilding year the following season.
And rebuilding is just a fancy word for regression—unless you get lucky and have a bunch of freshmen or sophomores break out a year ahead of schedule.