There are a couple of avenues to the 3rd seed
Throw in a loss by Cincinnati (they still play @ 6-3 USF, vs 7-2 SMU, @ 5-4 East Carolina, and likely vs 11-1 Houston in the AAC championship) and I think ND might get in over Cincinnati despite the head-to-head loss.
There is also lots of room for chaos in the Big XII, as Oklahoma still has to play the next three best teams in the conference, two on the road, and one of them twice.
Of course, ND is only a 5.5 point favorite over UVa. Is their QB back from the dead?
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At night, the ice weasels come.