In a 5-year period (86-90), we lost to the Champs 4 times, and the runners-up once. Obviously the odds are more likely when you advance further in the tournament. The Indiana game was only a Sweet 16 game, however.
Then from 98-04, we lost to the National Champs or Runners-up every year except the year we won it all. Three of those losses occurred in the Sweet 16.
1986-1990
86- Louisville, National Champs, Title Game
87- Indiana, National Champs, Sweet 16
88- Kansas, National Champs, Final Four
89- Seton Hall, Runners-Up, Final Four
90- UNLV, National Champs, Title Game
1998-2004
98- Kentucky, National Champs, Elite 8
99- UConn, National Champs, Title Game
00- Florida, Runners-Up, Sweet 16
(01- Duke WON)
02- Indiana, Runners-Up, Sweet 16
03- Kansas, Runners-UP, Sweet 16
04- UConn, National Champs, Final Four
Then from 98-04, we lost to the National Champs or Runners-up every year except the year we won it all. Three of those losses occurred in the Sweet 16.
1986-1990
86- Louisville, National Champs, Title Game
87- Indiana, National Champs, Sweet 16
88- Kansas, National Champs, Final Four
89- Seton Hall, Runners-Up, Final Four
90- UNLV, National Champs, Title Game
1998-2004
98- Kentucky, National Champs, Elite 8
99- UConn, National Champs, Title Game
00- Florida, Runners-Up, Sweet 16
(01- Duke WON)
02- Indiana, Runners-Up, Sweet 16
03- Kansas, Runners-UP, Sweet 16
04- UConn, National Champs, Final Four