Falcons' Kevin King: Enters concussion protocols

King has entered concussion protocols and is questionable to return to Sunday's game against the Broncos, Tori McElhaney of the Falcons' official site reports.

King sustained a head injury during the Falcons' first defensive series of Sunday's game. While King is being evaluated for a concussion, safety Richie Grant will fill in at corner alongside starter A.J. Terrell.