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Dolphins Place Alexander Mattison on Injured Reserve, Bolster Backfield Depth

Coach Mike McDaniel tapped the free-agent market to replenish short-yardage options after the veteran’s neck surgery.

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CHICAGO, ILLINOIS - AUGUST 10: Head coach Mike McDaniel of the Miami Dolphins speaks Alexander Mattison #8 after he walks off the field with an injury against the Chicago Bears against the Chicago Bears during the NFL Preseason 2025 game at Soldier Field on August 10, 2025 in Chicago, Illinois.

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.