Miami Dolphins running back Alexander Mattison underwent season-ending neck surgery Sunday in Chicago, sources told ESPN's Adam Schefter on Monday.

Mattison suffered the injury after he was tackled on a 21-yard pass play in Sunday's preseason game against the Chicago Bears and was taken by ambulance to a local hospital, where the surgery took place, the sources told Schefter.

He is expected to make a full recovery, sources told ESPN's Jeremy Fowler.

The Dolphins signed Mattison to a one-year contract this offseason, and he was third on the team's depth chart behind De'Von Achane and Jaylen Wright .

Veteran running back Jamaal Williams is in Miami for a tryout Monday, Schefter is reporting.

Mattison, 27, appeared in 14 games and made seven starts for the Las Vegas Raiders

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