Dolphins to Work Out Veteran RB After Awful Alexander Mattison News originally appeared on Athlon Sports. The Miami Dolphins lost veteran RB Alexander Mattison for the season. According to a report by Adam Schefter of ESPN,

The Miami Dolphins lost one of their running backs for the 2025 season as Alexander Mattison was placed on injured reserve after injuring his neck during Miami's preseason opener

The Miami Dolphins announced a series of roster moves earlier this week as the team looks to bolster their running backs corps. The moves come in response to a season-ending neck injury to Alexander Mattison, who the team signed in free agency this year with the goal of having him serve as a power-back option to compliment De’Von Achane.