FLOWERY BRANCH, Ga. -- The Atlanta Falcons have declared receiver Julio Jones and center Alex Mack out for Sunday's game at Kansas City.
Jones, a seven-time Pro Bowl selection, will miss his third straight game with a hamstring injury. Mack, a six-time Pro Bowl pick, will miss his first game of the season with a concussion.
A third starter, left guard James Carpenter, will miss the game with a groin injury.
Free safety Ricardo Allen is listed as questionable with a concussion. Allen was a full participant in practice on Thursday.