Dolphins lose A.J. Edds, add Micah Johnson

Rookie linebacker A.J. Edds tore the ACL in his right knee and will be out for the season. Edds was working with the second team, mostly in passing situations. To replace him, the team picked up undrafted rookie Micah Johnson. Johnson was with the Giants until he was waived in late June. I don't know much more about him.