I see that Iowa can beat everyone left on their schedule but all games will be tough, all of them. So I dont have them in this list of undefeated and one loss teams. Below is what I think are the games that will make or break. I think Oregon is favored to go undefeated now, OSU @ Penn St is huge and Ryan Day is staring 2 losses straight in the face, Nebby will have a tough road as do some others.
IU @ OSU and vs Mich
Ore @ both Mich and Wisc
Penn St has OSU at home
Ill has Mich at home (maybe they were thinking of this game late in their Purdue game) and @ Ore, a loss
OSU @ PSU and they have IU and Mich at home
OUCH, Neb @ IU, @ OSU, @ USC, @ Iowa
Mich @ ILL, vs Ore, @ IU and @ OSU
Wisky home vs PSU, @ Iowa, home vs Ore, @ Nebby
IU @ OSU and vs Mich
Ore @ both Mich and Wisc
Penn St has OSU at home
Ill has Mich at home (maybe they were thinking of this game late in their Purdue game) and @ Ore, a loss
OSU @ PSU and they have IU and Mich at home
OUCH, Neb @ IU, @ OSU, @ USC, @ Iowa
Mich @ ILL, vs Ore, @ IU and @ OSU
Wisky home vs PSU, @ Iowa, home vs Ore, @ Nebby