The Miami Dolphins ' running back room took a hit on Sunday after Alexander Mattison suffered a season-ending injury . With Mattison out for the entire 2025-26 campaign, the front office decided to bring in two more running backs to the roster.

Reports indicate that the Dolphins are signing running backs Mike Boone and Aaron Shampklin , according to ESPN's Adam Schefter. Both Boone and Shampklin should compete for backup roles on the team, as the starting role is expected to belong to De'Von Achane.

“Dolphins have signed RBs Mike Boone and Aaron Shampklin, and placed RB Alexander Mattison on season-ending injured reserve.”

Boone, who is 30 years old, has played in the NFL since the 2018-19 season. He began his career with the Minnesota Vikings, while also making appearances for th

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