I have to think this margin, as reported by 247Sports, would have been smaller had Wisconsin won against Illinois (still upset about that meltdown). But as it stands, Vegas sees Ohio State as almost a two touchdown favorite. The Badgers have the top defense in the NCAA, and even after losing are allowing just 7.6 points per game.
The spread almost doubles the amount of points they are giving up on the season which shows how dominate the country sees Fields, Dobbins and Co. So far this season. Ohio State has beat the spread six straight games after not doing so in the season opener against Florida Atlantic.