ANN ARBOR, Mich. (AP) - A pair of freshmen tailbacks put the Michigan football team's rushing total in the black for the first time in three weeks. Coach Brady Hoke isn't ready to take the starter label from fifth-year senior Fitz Toussaint just yet. Hoke said he would wait until after this week of practice to determine who will start at Iowa on Saturday. Toussaint, who sat out last week after being limited in practice, is listed as the starter on the depth chart released Monday. Derrick Green and De'Veon Smith combined for 125 yards on 27 carries in a 27-19, triple-overtime win at Northwestern last Saturday. In their prior two games, the Wolverines finished with negative rushing yards.