The Miami Dolphins signed two free-agent running backs following the injury to Alexander Mattison, who is out for the season.

During Thursday's joint practice with the Jacksonville Jaguars in Miami Gardens, the Dolphins lost running back Jaylen Wright ...

The Dolphins signed Boone to a contract Monday. With Alexander Mattison (neck) being placed on injured reserve, the Dolphins bolstered their backfield Monday by adding Boone and Aaron Shampklin.