So, TV during the game the announcing crew mentioned that Iowa's seniors were trying to go 4-0 against their "main rival." They did mention that it is not mutual, which, duh, but this was news to me none the less. I also figured Iowa viewed Wisconsin or Iowa State or some other corn school their rival (not Nebraska since they havent played much until recently). In terms of teams I know of, and assuming the announcers are correct, the teams that consider us their #1 rival are:
OSU
MSU
Illinois
Iowa
And then Notre Dame generally views USC as their main rival, although my coworkers (many ND alums) did mention that lately they've hated Michigan much more because of the nature of the 2009-11 wins.
Aside from those 4 teams, what other teams consider Michigan their "main rival" if any? Is there any other team in college football that is seen as the main rival of FOUR teams? Two I can understand, but 4-5 (depending how you view ND) seems absolutely ridiculous. Why on earth would Iowa/Illinois try to hitch up to Michigan when its clearly never going to be a legitimate rivalry?