The rivalry hasn't always been this intense.
This is still a rivalry between the Big 12's only private schools that has intensified with both teams succeeding at the same time. They were co-champions last season.
A really good piece by Ian Boyd on how versatile Kindred is.
There have been two constants in the midst of this that have allowed the Frog defense to make this run possible. The first is the TCU DL, a deep and high quality unit that doesn't have gaudy stats but consistently make it possible for their tiny LBs and nickel defense to reach the football without getting plowed by blockers.