Ordered from most disliked to least with slightly adjust tiers:
Rivals I've hated for extended periods
1. Indiana- There is no college basketball team I have hated more in my lifetime. Whether it was the Knight era, the Gordon incident, Sampson or Crean I've hated every iteration of that program and they're the one B10 team I'd want to lose every single game every single season. Shame we couldn't have taken that "last undefeated season" mantle from them in '05.
2. Iowa- I remember those Davis teams in the 80s with Marble and Horton and Armstrong. God I hated that team. I remember when unruly fans filled Carver-Hawkeye to the brim. I remember Bruce Pearl. And I can think of no better B10 rivalry than Illinois-Iowa in the past 5 years. Almost a shame Todd Lickliter destroyed their program and fanbase. Almost.
Teams I've hated for isolated periods
3. Michigan- Mainly for '89 and the Fab Five. But John Beilein making that program actually relevant again, and then the obnoxiousness during the Juwan and Hunter years adds to it as well. Couldn't have cheered louder when Chris Webber called that timeout and lost them the championship. Still cheering that Juwan called a timeout on their program turning it into a dumpster fire
Teams I plain do not like, bordering on hate
4. Maryland- Eff them and their fans, the absolute worst in college basketball. They haven't been in the B10 long enough to get to that hate tier, but they're close. Real close.
Teams I plain do not like
5. Purdue- They were pretty neutral to me for quite a while mainly because they irked Indiana and I enjoyed that. And Keady was good competition but I can't say I ever truly hated him. But they and their fanbase have gotten too big for their britches recently and the obnoxiousness is getting to me as is their recent success against us. They need to be taken down a peg
6. UCLA- They may be the most likable blueblood because their fans are no shows, but they're still a blueblood and both their success and hype each season is obnoxious in that fake "California cool" way
Rivals who I do not like, but respect and enjoy watching us play against because they make for great games
7. MSU- Since 2000, they've been our best benchmark for success, and for a long time were our biggest competition for B10 titles. Games are always close and hard fought, though in recent years have featured some dirty less enjoyable play. But whoever wins these games feels like they've been coronated as B10 champion through much of the 2000s
8. Wisconsin- The Kohl center doesn't rock like it used to, and they've fallen off since Bo Ryan left, but this is a team who always used to give us tough close games. Winning another BTT title against them was sweet. I enjoy playing them and beating them, especially in front of their own fans
Teams I dislike for 1 very specific reason
9. Minnesota- Their deathtrap floor. They need to burn the barn down to the ground. Also any year they've actually been relevant (and they had to cheat to do it no less) their fanbase is absolutely obnoxious
10. Oregon- Their court makes my eyes bleed. I'm glad the B10 forced them at gunpoint to change it, but they need to do even more
11. Penn State- They're so bad and yet seemingly have our number. I don't get it.
12. Ohio State- Ruining our perfect '05 season
13. Washington- Brandon Roy and Justin Dentmon being gifted 857 free throws in 2006 in a game we should've won to make it to the Sweet 16
Who?
14. Rutgers- Have no issue with them. If they get better year in and year out, they could rise up this list, but for now, they're down here
15. USC- While their football team immediately ranks Top 2 in dislike, their basketball team is a big yawn
Teams that have a soft spot in my hatred hardened heart
16. Northwestern- Generally they stink and there's no rivalry here no matter how much they believe there to be one. We should beat this team year in year out no problem. I look at them as your much younger little brother who you're supposed to beat on, but secretly smile when you see them beat someone else while still telling them they suck
17. Nebraska- They've only beaten us when we've had a terrible team and their huge upset win over Wisconsin actually gave us a B10 Championship. And hard not to have a soft spot for a team that has a fanbase I respect, that gifts you titles, and that you beat like a drum otherwise.