(Learfield Sports) — Iowa State coach Matt Campbell is not sure about running back David Montgomery’s status for this week’s game at Oklahoma State. Montgomery rushed for 101 yards in a 17-14 loss at TCU but left the game in the fourth quarter with an injury and did not return.

The Horned Frogs won the game with a field goal with 37 seconds remaining. Campbell remains confident in his team despite a 1-3 start.

It was another stellar effort by the Iowa State defense though Campbell says they had trouble getting the TCU offense off the field on third down. The Horned Frogs lone second half touchdown was scored by the defense on a 53 yard return of a Zeb Noland fumble.