Opposing a pair first-team All-Big Ten defensive ends, the remains of the best offensive line in the country last year now need to break in a first-time starter at left tackle and a right tackle stepping into twice the role he held previously.
Flip possession and find a reshuffled offensive line facing a defensive front with more depth than any point in recent history.
As always, when No. 12 Notre Dame hosts No. 14 Michigan on Saturday (7:30 p.m. ET; NBC), much of the result will be determined in the trenches. In this case, these two matchups are studies in strength vs.