UNC-Duke Really Is College Basketball’s Best Rivalry Posted Mar 3, 2017 It’s difficult to find a rivalry that combines so many different measurable factors of animosity between two schools. None of the rivalries with an Elo rating in the same neighborhood as the Tar Heels and Blue Devils have played anywhere near as often, nor do any have the physical proximity, nor are any as closely matched recordwise. It’s a set of conditions custom-built for hate. (FiveThirtyEight)