Who do you hate?
For Illinois fans, it depends on the year. Or the sport.
There is the always-obvious NCAA. The folks who put Illinois on probation a few times. But the school has stayed out of jail for a long time. Did you know the NCAA offices have moved? The Overland Park, Kan. dateline is no longer a reason to say "Uh-oh."
Back in the day, in football, the bitter rival was Michigan. Never mind that the Wolverines had others ahead on their own list. Like Ohio State, Michigan State and Notre Dame.
You've seen the T-shirts.