By Jake Boals | May 21, 2026
Key Points
- Roster moves continue under GM Jon-Eric Sullivan: Miami waived two players and signed two others, reflecting a commitment to reshaping the roster under the new regime.
- Offensive line focus: The release of Braeden Daniels and the signing of Marques Cox highlight Miami’s ongoing effort to build depth and competition along the offensive line.
- Depth additions at RB and OT: The Dolphins added Carlos Washington Jr. (RB) and Marques Cox (OT), two developmental players with potential to earn spots in training camp.
Who’s Out: The Departures
Braeden Daniels — OL (Waived)
Daniels, a 2023 fourth-round pick by the Washington Commanders, never played a regular-season game for the Dolphins. After spending time on Miami’s practice squad in 2025, he now finds himself a free agent.
Jalin Conyers — TE (Waived)
Signed as an undrafted free agent following the 2025 NFL Draft, Conyers’ NFL career never got off the ground. A season-ending injury kept him on injured reserve for the entirety of his rookie year. His release reflects the harsh reality of professional football: availability is often the most important ability.
Who’s In: The Additions
Marques Cox — OT (Signed)
Cox, an undrafted free agent in 2025, spent time on the Denver Broncos and Arizona Cardinals practice squads but has yet to make his NFL debut. At 6-foot-6, Cox brings size and athleticism to Miami’s offensive line. While he’s a developmental project, his physical traits make him a low-risk, high-upside addition.
Carlos Washington Jr. — RB (Signed)
Washington Jr. offers the most NFL experience of the group, having appeared in two games with the Atlanta Falcons after signing as an undrafted free agent in 2023. With Miami’s backfield led by De’Von Achane, Washington Jr. will need to prove his value on special teams or in training camp to secure a spot on the 53-man roster.
Roster Moves Recap
| Player | Position | Move | Background |
|---|---|---|---|
| Braeden Daniels | OL/G | Waived | 2023 4th-round pick, Washington Commanders |
| Jalin Conyers | TE | Waived | 2025 UDFA, spent rookie year on IR |
| Marques Cox | OT | Signed | 2025 UDFA, Broncos & Cardinals practice squads |
| Carlos Washington Jr. | RB | Signed | 2023 UDFA, 2 career games with Atlanta Falcons |
The Bigger Picture: A Methodical Rebuild
These moves may not dominate headlines, but they’re emblematic of the Dolphins’ new regime under GM Jon-Eric Sullivan and head coach Jeff Hafley. The front office has been clear in its approach: no roster spot is guaranteed, and competition will be the foundation of Miami’s rebuild.
By continually churning the bottom of the roster, the Dolphins are creating an environment where every player must earn their place. This disciplined and deliberate strategy ensures the team is constantly evaluating talent and addressing weaknesses.
As Miami prepares for training camp, expect more moves like these to shape the final 90-man roster. For a franchise in transition, every transaction — no matter how small — is a step toward building a sustainable contender.
— SportWire Miami | Coverage powered by The Phinsider
