A bit of a surprise to me too but thinking about it I remember that they had a run of great success prior to joining the Pac12. The competition stiffened and they haven't been so dominant since. There are a few other teams living off past glory. Tennessee, Nebraska and Texas have fallen on rough times over the last few years too.
Of course, Leach at, what, 56, isn't going to be around for another 14 years, and we still don't know if President Schulz is a combination of V. Lane Rawlins/Sgt. Schultz or a leader with a vision. Nonetheless, how many of the teams on this list has Leach defeated?