Overview
- Alexander Mattison underwent neck surgery in Chicago and was placed on injured reserve for the 2025 season with no expected career impact, according to coach Mike McDaniel.
- Miami signed veterans Aaron Shampklin and Mike Boone and hosted Jamaal Williams for a workout to fill the power-back void left by Mattison.
- De’Von Achane remains the feature back while Jaylen Wright, rookie Ollie Gordon II and the new signees will vie for third-down and goal-line duties.
- Mattison suffered the injury on a 21-yard catch in Miami’s preseason opener against the Bears after emerging as a standout in training camp.
- The Dolphins will use their remaining preseason games against Detroit and Jacksonville to evaluate the reconfigured backfield before the Week 1 opener at Indianapolis.