Brinkley passed the NFL's official concussion test on Thursday and was cleared to practice and play. He is listed as probable and will play.
Ryan Mathews did not practice Friday and missed the entire week with a groin strain. He is listed as questionable on the team's injury report, but his odds of playing are small.
"I feel fine," Brinkley said. "I felt good shortly after the game, but they were being cautious. I am glad that I'm going to be able to contribute on Sunday."
Even with Brinkley active, Tolbert will take the majority of the snaps Sunday. While it's unlikely Mathews will play, the team refuses to rule him out.
In addition to Mathews, the Bolts listed receiver Malcom Floyd (hip) and inside linebacker Na'il Diggs (knee) as questionable. Outside linebacker Shaun Phillips (foot) is doubtful but will not play. Defensive end Luis Castillo (tibia) and guard Kris Dielman (concussion) are officially out.