Sophomore running back averaged 7 yards per carry in 2016.
Wolverines insist it's business as usual for season opener.
Wolverines have one of the toughest slates in the nation.
Wolverines must now replace dependable Allen, Peppers.
Receiver had been accused of series of serious crimes.
Old-school Harbaugh not afraid to let youngsters on the field.
Harbaugh has also supported former 49ers quarterback Colin Kaepernick and Michigan players who opt to kneel or put a fist in the sky
Speight let Wolverines to nine wins last season.
Blade sports columnist David Briggs unveils his top 25 with Alabama No. 1.
O’Korn, Speight at top of Wolverines’ list