Just in case you didn't know about this series, Norwood House has a Team Spirit: College Football set of books. I don't know what titles are included: I only knew I had to buy the The Ohio State one. My students don't understand that people outside of central Ohio really don't care, and there aren't a lot of books for middle school students about the team.
In all fairness, I bought the Michigan one, too. Of course, that order came first, and I got a lot of flack for it.