The Miami Dolphins and the Las Vegas Raiders are switching backfields, as Alexander Mattison has signed with the Dolphins. Earlier in the day, Raheem Mostert agreed to sign with the Raiders. Mattison played in 14 games for the Raiders last season and started in seven of them,

Amid a flurry of moves elsewhere in the NFL, including a blockbuster deal that sent former Miami Dolphins first-round pick Laremy Tunsil from the Houston Texans to the Washington Commanders, the Dolphins sat on their hands for the majority of the day.

Linebacker Tyrel Dodson is returning to the Miami Dolphins on a two-year contract, a source confirmed to ESPN. Dodson signed a one-year, $4.2 million deal with the Seattle Seahawks last offseason after spending his first four seasons with the Buffalo Bills,

The Dolphins and free agent linebacker K.J. Britt have agreed to terms, but Miami is losing LB Anthony Walker Jr. to the Buccaneers.

The Miami Dolphins are adding former New York Jets safety Ashtyn Davis. In his last game with the Jets, Davis had two interceptions and nine tackles against the Dolphins. The Miami Dolphins, having lost Jevon Holland in free agency,

The Dolphins addressed their hole at safety by agreeing to a deal with a player who intercepted them twice in Week 18 last season.