Akins, meanwhile, was placed on injured reserve. It marks the second consecutive year that the safety has been placed on injured reserve before the season. Akins was injured in the preseason opener against Chicago.
In other Dolphins news:
-- Linebacker Junior Seau practiced for the first time this training camp. Seau, who had been out because of a calf injury, worked only on a limited basis.
-- Guard Jeno James is having a stomach problem again, and the Dolphins are trying to find out exactly what is wrong.
-- Coach Nick Saban said that Rex Hadnot will play at guard in Saturday's preseason game at Jacksonville after starting at center against Chicago. Seth McKinney is expected to start at center against the Jaguars.
-- Defensive end Matt Walters is going to be out for several days because of a shoulder injury sustained against the Bears. Walters won't play against Jacksonville.