Three Tennessee Titans defensive backs have yet to participate in the first two practices this week as they prepare for the Cincinnati Bengals. Out with injuries are cornerbacks Kristian Fulton and Tye Smith along with safety Dane Cruikshank. Cornerback Adoreé Jackson might return Sunday. He’s in his second week since being designated to return from injured reserve and could be added to the active roster. Kickoff at Paul Brown Stadium is at noon Sunday.