As discussed earlier, Nebraska's invitation to the Big Ten adds a number of new rivalries to the conference. But a major downside to the Cornhuskers' move is the effect that it will have on other, longstanding rivalries.
As Jim Delay has said, rivalries are what make the Big Ten unique and are a large part of the conference's identity.
It's the only conference in the country in which teams play for Paul Bunyan's Axe, a bronze pig, a brass bull, a wooden turtle, and a brown jug.
But with a new division model imminent, some of these trophies will be in jeopardy.
Unless divisions are decided by geography—which still may not save every rivalry—some of these trophies won't be played for annually. And after Delany's comments that geography will play a small role in deciding divisions, expect some of these great trophies to be laid to rest.
Some rivalries won't be touched (i.e. Michigan-Ohio State and Wisconsin-Minnesota). Others, such as the Illinois-Ohio State game for Illi Illibuck (the turtle), wouldn't be missed as much.
But some of the most competitive rivalries in the Big Ten could be ended. The game in most danger—Iowa-Wisconsin.
Most experts have drawn up the Big Ten divisions, placing the Hawkeyes and Badgers in separate divisions, giving each team a protected "crossover" game against either Nebraska or Minnesota.
If this is the case, then one of the most competitive (Iowa leads the series 42-41-2) and oldest rivalries in college football will be gone.