NCAA Week 13 - Rivalries are the lifeblood of college football. No other sport has as many, and there's a case to be made that none are as fierce. It's odd, then, that these rivalries are so different—there's hardly anything that can be said of all of them. Some are tightly knit: in-state rivalries take place across the sport, and down in Division II, Henderson State and Ouachita Baptist walk from one stadium to another to face off. Others are cross-country showdowns: USC and Notre Dame do battle in football's greatest intersectional rivalry, for example. There are wildly tight rivalries (Wisconsin and Minnesota are separated by two wins in their 130 games) and ridiculously lopsided ones (Oklahoma quintupled Oklahoma State's win total in Bedlam last year).