Ohio State's win over UCLA formally and mathematically eliminated all of the three-loss teams as both the Buckeyes and Hoosiers cannot finish with more than two losses (one in the case of IU). That eliminated all of the previous three-loss teams and at the same time Iowa and Minnesota picked up their third loss each so it is now a five-team race between:
- 8-0/11-0 Indiana: Off, at Purdue
- 7-0/10-0 Ohio State: vs Rutgers, at Michigan
- 6-1/9-1 Oregon (lost to IU): vs USC, at Washington
- 6-1/8-2 USC (lost to IL): at Oregon, vs UCLA
- 6-1/8-2 Michigan (lost to USC): at Maryland, vs Ohio State
The situation is obviously simple for the Hoosiers and Buckeyes. They control their own destiny. If they win out they'll meet in Indianapolis in what will likely be a #1 vs #2 showdown with the top seed in the CFP and possibly also the Heisman trophy on the line.
The other three need to keep winning. In Michigan's case, winning out gives tOSU a loss and thus gets them into at least a tie for the second B1GCG spot BUT the Wolverines DO NOT control their own destiny because while they would win a two-way tie with Ohio State, they would lose a two-way tie with USC and they would probably also lose a three-way tie with Ohio State and either USC or Oregon.
Here are the current cumulative league records of each of their league opponents:

As a practical matter, the only order that could probably flip is M/tOSU. Oregon's opponents three-game lead on USC's opponents is probably insurmountable as it USC's lead on Michigan and Ohio State's lead on Indiana. This matters because it ends up being the operative tiebreaker in most ties.
Let's talk scenarios. The most likely loss by one of the undefeated teams would be for Ohio State to lose in Ann Arbor. If that (and no other upsets) happens, we end up with a three-way tie between the Wolverines, Buckeyes, and the Oregon/USC winner.
Here are
the tiebreakers. Technically that says "2024 Big Ten . . ." but I do not see anything more recent so I *THINK* that still applies. For a tie involving three or more teams:
- H2H but only if all teams played each other or if one team beat each of the others. That couldn't apply in any potential tie so move to
- Record against common conference opponents.
- Record against the best team in the league, then the next, etc
- Best cumulative conference winning percentage by the teams' league opponents (see above)
- SportSource Ranking
- Random Draw
In the event of a three-way tie between Ohio State, Michigan, and either Oregon or USC I believe that the B1GCG would be between Indiana and either Oregon or USC.
So, bottom line:
- Indiana needs to beat Purdue
- Ohio State needs to beat Rutgers and Michigan
- Oregon needs to beat USC and Washington AND for Michigan to upset Ohio State
- USC needs to beat Oregon and UCLA AND for Michigan to upset Ohio State
- Michigan needs to beat Maryland and Ohio Sate AND either for Indiana to lose to Purdue or for the Ore/USC winner to lose their rivalry game.
I haven't focused much on the PU/IU game because while Ohio State will be something like a TD favorite in Ann Arbor, the Hoosiers are probably going to be a 4 TD favorite in West Lafayette but here goes:
If Indiana loses to Purdue then USC gets into the B1GCG by winning out. Oregon would need help because they'd lose a two-way tie with IU based on H2H so they'd still need an Ohio State loss.