"I feel like I'm heading in the right direction," Addai said Thursday, during a week in which he fully participated in practice. "I felt good. I didn't set myself back. Really, I'm just happy to put on a uniform and just get back into it."
Linebacker Clint Session also is questionable after missing seven games with a broken arm and a dislocated elbow. Tight end Brody Eldridge (rib), running back Mike Hart (ankle), cornerbacks Kelvin Hayden (neck) and Mike Newton (neck), offensive tackle Charlie Johnson (groin), defensive tackle Daniel Muir (chest) and guard Jamey Richard (hip) also are questionable for the game.
Linebacker Tyjuan Hagler (illness) and tight end Gijon Robinson (illness) are listed as probable.
The Associated Press contributed to this report.