What happened: The Dallas Cowboys pass defense currently ranks last or near the bottom of the NFL in nearly every major statistical category. The unit is 32nd in EPA per pass play allowed, pass success rate allowed, passer rating allowed, and interceptions.

Why it matters: The defensive struggles underscore the issues for a Cowboys team that just dropped a 24-16 decision to the Tampa Bay Buccaneers. The Dallas defense falters in Christian Parker's coordinator debut, creating a major vulnerability for the roster.

What to watch: Dallas must address its systemic secondary issues as it looks to rebound from its recent loss.