It will be interesting to see if Mazi Smith is active after he was a healthy scratch to open the season. What is definitive, though, is that Dallas will be without Perrion Winfrey once again due to his back injury. Cowboys place DT Perrion Winfrey on IR with a back injuryThis is a devastating break for Winfrey, who earned his spot on the 53-man roster with an exceptional summer. That begs the question of what Dallas will do with the open spot on both the active and game day roster. As far as the active roster is concerned, Ryan Flournoy makes a lot of sense.