Davis (concussion) has been ruled out ahead of Sunday's game against the Titans, Amna Subhan of the Falcons' official site reports.
The 27-year-old was able to log a limited practice session Friday after recording consecutive DNPs on Wednesday and Thursday, but it seems as if he still isn't ready for in-game action just yet. Davis has played almost strictly on special teams this year, recording only one defensive snap for Atlanta.