The Dolphins have added a running back to replace the depth lost when Ronnie Brown was lost to a torn ACL by signing Dolphins' former Texans RB Samkon Gado off waivers. Gado is 24 years old and is best known for replacing a hurt Ahman Green for the Packers in 2005. He started 5 of 8 games he played that year and had 582 yards and six TDs.