Michigan's camp opens with plenty of questions

(Photo: David Guralnick, Detroit News)Camp opened for Michigan on Friday with some weighty additions — that’s added weight, muscle and bulk to a number of players on the recently released roster — some noticeable player absences and the strong possibility that Michigan coach Jim Harbaugh may go “submarine” with this camp as he did his first season.

That many players have added weight comes as no surprise, considering they have spoken since before spring practice and into the summer about new strength coach Ben Herbert and the changes he has helped make in terms of their physiques and fitness as well as a strong focus on nutrition. Absent from the roster, though, are receiver Kekoa Crawford,…