If Ohio St. wins their next two games and the Big 10 title game, I can see having them as the 4 seed basically based on how their roster looks on paper to see it play out on the field in the playoffs.
If they lose a game or get one of their next two canceled so they end 5-0 with no Big 10 title you can't let them in over undefeated Cincinnati, 1 loss SEC or ACC teams, or a 2 loss Big 12 champion. If there aren't 2 teams that fit that criteria for the 3 & 4 seed it's anyone's guess what will happen.
If they lose a game or get one of their next two canceled so they end 5-0 with no Big 10 title you can't let them in over undefeated Cincinnati, 1 loss SEC or ACC teams, or a 2 loss Big 12 champion. If there aren't 2 teams that fit that criteria for the 3 & 4 seed it's anyone's guess what will happen.