I don't know where all those teams finished in the rankings at the end of the regular season, so it's difficult to gauge it completely. There were 4 wins vs. ranked in '88 — 2 in and 2 out of conference. Ended up as 12 seed. Enough quality even with a losing record in Big 8.
1988 - Purdue (Big Ten #1, NCAA #1 seed), Iowa (Big Ten #3), Florida (SEC #2), Kansas (Big Eight #3), Missouri (Big Eight #2)
1992 - Iowa (Big Ten #5), Oklahoma (Big Eight T-#2, NCAA #4 seed), Oklahoma State (Big Eight T-#2, NCAA #2 seed), Kansas (Big Eight #1, NCAA #1 seed), Missouri (Big Eight T-#2). Iowa State finished T-6th.
1995 - Kansas twice (Big Eight #1, NCAA #1 seed), Missouri (Big Eight #4)