I decided to look back at the Big Ten/ACC opponents we got when we were ranked (i.e., receiving any hype at all...) at the time of the Challenge:
1999-00: #17 Duke vs. #16 Illinois (Chicago, IL)
2000-01: #9 Illinois vs. #1 Duke (Greensboro, NC)
2001-02: #2 Illinois at #5 Maryland
2002-03: #12 North Carolina at #25 Illinois
2003-04: #11 Illinois vs. #10 North Carolina (Greensboro, NC)
2004-05: #1 Wake Forest at #5 Illinois
2005-06: #12 Illinois at North Carolina
2010-11: North Carolina at #20 Illinois
2012-13: Georgia Tech at #22 Illinois
2020-21: #6 Illinois at #10 Duke
So, pretty much any time we have been ranked at the time of the event, we have been given a very exciting opponent ... hope that trend continues. It's kind of amazing how many times we have played Duke or UNC, lol.