2-What went wrong the Cardinals defense this year?

It can almost all be pinned on the defense. The offense has made huge strides, although it still needs to get better on third down and in the red zone.
Defensively, it started with Patrick Peterson’s suspension. Then Darius Philon, an important defensive line addition in free agent, got arrested and was released. Safety D.J. Swearinger was washed up suddenly after playing at a near Pro Bowl level in Washington. Cornerback Robert Alford broke his leg.

They have had to play rookies and then the defense has just been bad. Chandler Jones is doing his thing but Terrell Suggs has been mostly invisible for weeks. They can’t cover tight ends. They give up piles and piles of yards in the air. They can’t stop anyone on third down.

Between injuries, underperformance and a scheme that doesn’t seem to put players in position to make plays, it has been awful.

Perspective: Opposing quarterbacks have a 113.2 passer rating against the Cardinals. The highest passer rating in league history is Aaron Rodgers, who is at 103 for his career. Essentially, the Cardinals are making every quarterback look like a Hall of Famer.