That may or may not be a rivalry.
Before I was fully admitted into the escape-proof prison of hate that is the Louisville-Kentucky rivalry (ages 0-4, basically), there was Indiana.
My father and my two older brothers were my unassailable sporting guides through the vastly underrated preschool formative fandom years, and their stance on IU was pretty clear: Bob Knight was a mean guy and the Hoosiers wouldn’t play Louisville anymore because the Cardinals used to beat them too much…