Cowboys had top 5 defense before injuries

The more I research Rob Ryan the more I like. The Dallas defense was top 5 at the beginning of the year and that was without getting any turnovers like the overated Bears. They lost 7 starters to injuries but still managed to finish 19th in overall defense. This article details the significance of those injuries to the backbone of the Dallas defense.
Five Healthy Starters Left On Cowboys Defense After 11 Games - Blogging The Boys

"After 11 games, that leaves five healthy starters on defense, as the following graphic illustrates:"