Yes, biggest upset in history. You dont get upsets like that unless you are a big time program.
Hey it happens.
You lost first round or nothing:
1999 #9 Ok State
2002 Nothing
2005 #13 Vermont
2006 #12 Texas A & M
First of all a 9 seed beating an 8 seed is not an upset, those are usually flip of a coin games. 2006 wasn't really an upset, because a&m was terrible misseeded, and we weren't really a 5 seed, the committee did a bad job there.