Among the questions the Arizona Cardinals not only hope but expect to answer during training camp is that the defense once again can be one of the best in the league.

The Cardinals were the fifth-toughest team to score on last season and No. 13 against the run.

But that was before a chunk of the roster was turned over during the offseason and defensive coordinator Todd Bowles left to become the Jets head coach.

Cornerback Antonio Cromartie followed Bowles to New York, nose tackle Dan Williams signed with the Raiders, Tommy Kelly retired and middle linebacker Larry Foote joined the coaching staff.

That is a lot to replace in one training camp and maintain the status quo. But those who must do so believe it can and will be done.

"There's a lot of things we can't wait to get on the field for to show the world we're the real deal," said All-Pro cornerback Patrick Peterson, one of several players to mention "top 5 defense" as a goal.

The return to health of Peterson -- whose Type 2 diabetes led to sluggishness and weight gain last season but is under control now he said Monday -- and safety Tyrann Mathieu will play a big role in such proclamations. But the Cardinals also expect the additions of free agents Sean Weatherspoon at linebacker and Cory Redding and Corey Peters along the line and second-round draft pick Markus Golden at outside linebacker to more than fill voids.