*North Carolina was a charter member of its conference in 1921, while Duke joined in 1928. However, every school that was a member prior to Duke remained a member by 1928, so the list of all-time conference rivals for UNC and Duke is identical, as they have been joined at the hip since.
The only difference is that UNC's date range for pre-1928 schools—which is what is displays below—begins with each school's membership in that league, while Duke's would begin instead in 1928.
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