The Dolphins immediately got to work on finding new running backs this preseason amid Alexander Mattison’s season-ending injury.

Miami Dolphins running back Alexander Mattison is done for the year after suffering a neck injury in the team's preseason opener that required surgery to repair, according to ESPN's Jeremy Fowler.

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 against the Chicago Bears on Sunday. Mattison had surgery in Chicago after being taken by ambulance to a local hospital, according to ESPN.

No changes here. Miami’s tight end group leans more toward blocking than receiving threats. Veteran addition Darren Waller remains on the PUP list, but is expected to be ready for Week 1. Pharaoh Brown and Julian Hill should be safe roster picks thanks to their blocking ability.

Chicago Bears head coach Ben Johnson shared some injury updates following their preseason tie vs. the Miami Dolphins.

The Miami Dolphins and the Chicago Bears will kick off their 2025 preseason at Soldier Field on Sunday. The wait is finally over as the NFL preseason is officially here, and these two squads continue their preparation for their opening games of the regular season during this matchup.