Arian Foster has been battling a hamstring injury, but even though he was listed as questionable for Week 9, he still managed to make his start for the Texans.

That won't be the case Sunday.

He hurt his back almost immediately in Houston's loss to the Colts last Sunday, and that injury will keep him out of this Sunday's game vs. the Cardinals, interim coach Wade Phillips said Friday. Even worse, though, is the news that Foster might have to undergo season-ending surgery on his back