EXCLUSIVE CONTENT Get ESPN+ Michigan and six other undefeated teams facing prove-it games this weekAdam RittenbergSep 28, 2021, 07:00 AM ETCloseCollege football reporter; joined ESPN in 2008. Graduate of Northwestern University.Follow on XMultiple AuthorsEmailThere are certain games on every team's schedule that provide clear markers of progress. For Michigan, this week's trip to Wisconsin was always going to be that game in 2021.
