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

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

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

If Mattison - 5-foot-11, 220 pounds - can convert short-yardage plays at a rate similar to Ajayi, another former Boise State ...

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

Dolphins add running back Alexander Mattison. He has started 26 career games, including 7 for the Raiders last season.

Alexander Mattison has a deal in place to join the Dolphins, Jordan Schultz of Fox Sports reports. After a single season with ...

The Miami Dolphins announced today that they have signed running back Alexander Mattison as an unrestricted free agent.

Mattison is signing with the Dolphins, Jordan Schultz of Fox Sports reports.

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 ...

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.