I found three other teams. Purdue is 5-0 vs AZ, Gonzaga, Tenn, Marquette, and Alabama; Kansas went 2-1; Tennessee went 2-2.
Gonzaga, not in a major conference played 3 Sweet 16 teams but lost all of them. They are about to get a second chance against Purdue. Michigan St always plays a bunch of top teams non conference, but won only one this season.
There may be others but I didn't find them.
BYU had one of the strongest teams in the country this season.
Lack of NCAA success is very unpleasant but anything can happen in one game.
Maybe we can get that monkey off our back next season. Team should be a little stronger, despite the significant losses of SJ & Jax. The offense is there. Defense needs to improve.