The Miami Dolphins must win. But without much salary cap space, they're proceeding slowly and wisely in the first wave of free agency.

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.

The Miami Dolphins have a lot of work to do in NFL free agency, and we’ll be keeping track of every single one of their moves.

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

Miami's ineptitude on third-and-1 run success rate was exceeded by only the Patriots. Enter Alexander Mattison, free agent running back addition. Pro Football Focus graded Mattison as 42nd among 47 NFL running backs last season.

The Miami Dolphins added former Las Vegas Raiders assistant general manager Champ Kelly to their front office staff as a senior personnel executive, according to ESPN's Adam Schefter. Kelly began his NFL talent evaluation career in 2007 as a scout with the Denver Broncos and worked his way up to assistant director of pro personnel with the franchise.

Former Miami Dolphins linebacker Anthony Walker Jr. is joining the Tampa Bay Buccaneers on a one-year deal, according to ESPN's Adam Schefter. Walker, 29, spent just one season in Miami after he signed with the team as a free agent in 2024.