Mattison, who had signed a one-year contract with the Dolphins in the offseason, was expected to provide valuable depth and short-yardage production. He suffered the injury after catching a 21-yard pass, but despite some initial optimism, his condition worsened, leading to surgery. Fortunately, Mattison is expected to make a full recovery, but he will not return this season.
According to Adam Schefter, Miami Dolphins running back Alexander Mattison had season ending neck surgery as a result of this tackle during their preseason game against the Bears on Sunday at Solider Field. pic.twitter.com/6C2NagNvj3
— Steve Scheuer (@Scheuer_Thing) August 11, 2025
Alexander Mattison Out for 2025 Season After Neck Surgery
In response to the injury, the Dolphins signed former Pittsburgh Steelers running back Aaron Shampklin to help fill the void. Shampklin, who has limited NFL experience, rushed for 17 yards on six carries with the Steelers in 2024.
The 27-year-old will compete for snaps behind De'Von Achane and second-year back Jaylen Wright. Meanwhile, rookie Ollie Gordon II will also battle for a spot in Miami’s running back rotation. The loss of Mattison leaves Miami with limited depth at the position, and the team will likely continue evaluating other free-agent options, including veteran Jamaal Williams, to bolster their backfield.
Dolphins running back Alexander Mattison underwent season-ending neck surgery Sunday in Chicago, per sources. Mattison hurt his neck during Sunday’s game vs. the Bears, was taken by ambulance to a local hospital and had surgery. pic.twitter.com/uYM95c6WXz
— Adam Schefter (@AdamSchefter) August 11, 2025
Mattison’s departure leaves the Dolphins with significant questions at running back, especially with Achane expected to lead the charge. While Achane is poised for a breakout season, the team will need more from its remaining backs to stay competitive.
Photo Credit: David Banks-Imagn Images
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