4. Junior Fehoko
Despite being a fourth-round pick earlier this year, Junior Fehoko is still looking to make his NFL debut.
Simply put, there hasn't been much of a reason to play him yet. It's well-documented that the Cowboys' defense has been elite with no underperforming to the point where it requires a removal from the lineup.
It's like the old saying goes, "If it ain't broke, don't fix it."
Eventually, Dallas will have to give Fehoko some playing time, but that's hardly a necessity this week. Arizona has one of the league's worst offenses on paper and I doubt the Cowboys need extra help to slow down Joshua Dobbs.
Micah Parsons, DeMarcus Lawrence, Sam Williams, Dorace Armstrong and Dante Fowler Jr. are all playing too well for Fehoko to warrant playing time over them. Maybe the rookie defender will get a chance to debut if one of the above names gets injured at practice, but I wouldn't hold my breath.
Fehoko will be given a chance to make an impact soon, but there's no reason to mess with chemistry at this point. Let the defense cook for another week before considering giving the rookie a shot vs. the Patriots in Week 4.