said. "I'm definitely going to do anything the coaches ask me."

The team added two more options on Wednesday, signing veteran linemen Isaac Sopoaga and Ryan McBean to one-year contracts.

Time will tell if the Cardinals can adequately replace Dockett on the field, and there's also a question as to how the team will respond without his leadership. Dockett and wide receiver Larry Fitzgerald have the longest tenures on the team, and Dockett brings a fiery presence.

"He brings so much emotion and leadership, it's something that's so hard to come by," center Lyle Sendlein said. "A lot of times it's uncomfortable for guys to stand up in front of the team and talk, and very few times when a guy stands up and talks does everyone listen. Dockett is one of those guys."

While Campbell is also a decorated veteran, he is not as naturally outspoken as Dockett. He said he will make a concerted effort to fill that void as the younger players look to him for guidance.

"I was kind of second-in-command, I guess," Campbell said. "I tried to speak up and be a leader already, but now I have to step up and be a vocal leader even more, because he was our vocal and emotional guy before games, breaking down the huddle and getting everybody hyped. Even in practice, when things were going wrong, he was the one that got us together."

Dockett's injury is the latest blow to a defense that looks much different from 2013. Linebacker Karlos Dansby left in free agency and linebacker Daryl Washington was suspended for the season, making Dockett's departure the third key loss.

With Rucker's promotion, there could be six new starters on defense in the season opener if safety Tyrann Mathieu isn't ready by then. Arians downplayed the losses of Dansby and Washington when they occurred, and still believes in the defense without Dockett.