Shoulder surgery in March caused Scott, a third-year veteran, to miss the first three preseason games.
Regarding the status of starting wideout Dez White (knee) and backup linebacker Jordan Beck (foot), the Falcons are less sure. As Beck sat in the locker room after the game, the swelling was so bad that it seemed a golf ball was lodged inside the top of his left foot.
If White can't start against the Dolphins, Brian Finneran would likely take his place.
Other significant players to sit out the Jaguars game were linebacker Keith Brooking (thigh), receivers Roddy White (ankle) and Peerless Price (ribs, concussion) and cornerbacks Jason Webster (hamstring) and Kevin Mathis (hamstring).