DL straight up and shut down Michigan's running attack and put just enough pressure to make their QB make mistakes in the passing game. Just think what the Utes defens would do now having actual game field of Michigan's offense and could prepare for that offense.
The only reason Michigan scored 17 on Utah defense was because of their mistakes by one player on Utah's defense and not because of Michigan's offense. The Utah LB on what would have been 4th down Michigan should have punted but they got two 1st downs and 15 extra yards take away those mistakes and Michigan only scores 10 against Utah's defense.