It’s Big Ten football, and this is “ The Game ,” which can only mean a trench war where every yard is earned and every mistake is magnified. No. 1 Ohio State top-ranked defense per SP+ combined with a disciplined offense has made for methodical, mistake-free football that has suffocated opponents in every high-leverage situation.  The defending champions look to keep that roll going against a run-first No. 15 Michigan bunch. The Wolverines thrive when they can sustain drives despite fragility