I agree that to warrant an article, a collected sequence of games between a particular set of teams has to amount to more than just - I don't know, two teams that have been in the same conference a long time.  None of these seem particularly noteworthy, though I can't claim any deep knowledge of these schools.  Do you have a particular definition of "rivalry" in mind, or is it just the sense (which I share) that whatever it is, these aren't that?  I would weigh in on any AfD you might file, as I just did above, but they'd go more smoothly if there were something more objective to point to!