Miami Dolphins' signed former Pittsburgh Steelers' running back Aaron Shampklin and NFL Veteran Mike Boone on Monday after veteran back Alexander Mattison had season-ending neck surgery.

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

Dolphins Must Pursue Devin Singletary Trade After Alexander Mattison Injury originally appeared on Athlon Sports. An already concerning Miami Dolphins running back room suffered a significant blow when seven-year veteran Alexander Mattison underwent season-ending neck surgery on Sunday night.