There are some one loss scenarios out there, but not that many.
A 2 loss GA and a 1 loss OK would go over a 1 loss Irish team.
This turned out to be a very weak schedule, through no fault of our own. Absolutely no elite teams, with the possible exception of Michigan. If USC and FSU were ranked in the top ten, and Virginia Tech were decent, then I think the Irish could get in with one loss.