So you may be wondering who wins the tie if both the tOSU and Iowa Women's teams win out until the finale and then the Hawkeyes beat the Buckeyes in Catlin Clark's last home game. Well, the answer to that is neither simple nor clear.
In that case Iowa and Ohio State would both be 16-2 in the league. They would be 1-1 against each other. Iowa would be 1-1 against Nebraska, Ohio State would be 1-1 against Michigan, and they would both be perfect against each of the other teams in the division.
The first tiebreaker is H2H which does not help because they would be 1-1.
The next tiebreaker is record against the next best team(s) in the league, then the next, etc.
Third place in this case would be Indiana. Iowa would be 2-0 against the Hoosiers while Ohio State would only be 1-0 against them having not visited Bloomington.
So you might think that Iowa wins because 2-0>1-0 but you would be wrong. The B1G rules state that this is based on percentage and explicitly state that 2-0 is NOT better than 1-0.
So we move on.
If Nebraska finishes with a better record than Michigan, Ohio State wins. If Michigan finishes with a better record than Nebraska, Iowa wins.
Nebraska is one game ahead of Michigan right now and Ohio State still has to play and beat Michigan so that favors the Buckeyes.
You might ask what happens if Michigan and NNebraska tie? Well it depends. Ohio State only plays Nebraska once (Wednesday) and Iowa only plays Michigan once (Thursday) so both Iowa and Ohio State would be 2-1 against the two of them. However, if another team or teams were also tied with the Cornhuskers and Wolverines and that team or those teams did not play Iowa and Ohio State the same number of times that would be decisive.
If that doesn't solve it then it goes to overall record where Iowa would prevail.