The Dolphins have only one above average defensive lineman under contract, in Zach Sieler. They have a nose tackle, Benito Jones, who has consistently graded out among the worst in the league. Their only two other defensive linemen under contract are journeymen Matt Dickerson and Neil Farrell.

Calais Campbell was one of the Dolphins’ best and most inspirational players last season. Campbell, who is entering his 18th season, finished with 52 tackles last season, and 5.0 sacks.

The Miami Dolphins are losing Calais Campbell to the Arizona Cardinals. This creates a major void both on the field and in the area of team leadership.

Through the initial wave of free agency, the Dolphins still haven’t adequately addressed two key positions, but coach Mike McDaniel says he has a plan.

The 38-year-old Campbell, a former Walter Payton Man of the Year winner and probable future Hall of Famer with 110.5 sacks, was needed to reset Miami’s culture.

Veteran defensive lineman Calais Campbell is returning to where it all started. Campbell, 38, signed a one-year deal with the Cardinals, the organization he played for through his first nine years after they drafted him in the second round of the 2008 NFL Draft,