The Dolphins and free agent RB Alexander Mattison agreed to terms. Here’s what to know and how he fits in Miami.

Joe Schad is a journalist covering the Miami Dolphins and the NFL at The Palm Beach Post. You can reach him at ...

The Miami Dolphins added a power-running veteran to their running back room on Thursday, agreeing to a deal with Alexander ...

The Miami Dolphins are bolstering their backfield in free agency. The Dolphins agreed to sign veteran running back Alexander ...

New Dolphins running back Alexander Mattison has a history of success in short-yardage situations. Mattison has converted 81% of his short-yardage attempts into first downs. The Miami Dolphins ...

Free agent running back Alexander Mattison has agreed to a one-year contract with the Dolphins, a source confirmed to ESPN.

Mattison makes his way to Miami following six seasons in Minnesota and Las Vegas. The Bronco great has tallied 2,790 rushing yards and 22 total scores in the NFL.

The Miami Dolphins have agreed to terms with former Las Vegas Raiders running back Alexander Mattison. Mattison is a powerful runner who will provide a change of pace from Miami's speedy backs.

The Miami Dolphins added a power-running veteran to their running back room on Thursday, agreeing to a deal with Alexander Mattison, a person with knowledge of the agreement told The Associated Press.