Here's how it breaks down according to Rivals:
"Scouting The Offense: The Wolverines are dealing with uncertainty at the quarterback position, where QB Denard Robinson leads the Big Ten with 150 yards rushing per game, but he had to leave the Illinois game in the fourth quarter with concussion-like symptoms. He is expected to be available for the game with Purdue, but Robinson’s durability is suspect, since knee and shoulder injuries have also knocked him out of previous games. Should Robinson be sidelined, Michigan has a different offense, but not necessarily an ineffective one. QB Tate Forcier filled in for Robinson and led the Wolverines to the triple-overtime win against Illinois with his passing and running."
"Scouting The Defense: The Boilermakers have had the heart of their offense removed when season-ending injuries claimed their top receiver, running back and quarterback, so the Purdue team Michigan faces is somewhat limited in its options. Michigan’s struggling defense will be best served by living with the blitz and hoping to force mistakes aplenty from Purdue’s trio of young quarterbacks."
OK, so Robinson is an uncertainty? Really? According to whom?
We beat Illinois on the last play by blitzing, so we have to live by the blitz? What?