Update (Tuesday, 3:49 PM ET): Kyle McCord, whom the Dolphins acquired last summer from the Packers, becomes Miami's new starting quarterback, according to Adam Schefter; QB Brady Cook is on the practice squad. McCord is set to make his NFL debut Sunday against the Colts, and Miami will be without Willis for at least four games, Tom Pelissero reports.
The Dolphins are placing quarterback Malik Willis on injured reserve, according to Tom Pelissero of The Ringer. Willis has been battling a groin injury that impacted his mobility, and an MRI showed it has developed into a core muscle injury that requires rest. The injury is not season-ending, Pelissero reports.