Purdue injured quarterback Robert Marve will practice more this week, but his status for Saturday's home game and Big Ten opener against Michigan is still uncertain. Marve suffered another knee injury in their September 8th loss at Notre Dame and hasn't played since.  Caleb TerBush has been starting in his place.  The Boilermakers improved to 3-and-1 with a 51-41 win over Marshall last weekend.