Posted by ESPN.com's Mike Sando
Smith is not serving as the third quarterback. He is out for this game. A shoulder injury is to blame, according to the team.
Also inactive for the 49ers today: Marcus Hudson, Tarell Brown, Reggie Smith, Ahmad Brooks, Cody Wallace and Chilo Rachal. The 49ers are carrying more defensive backs (12) than most teams, one reason Hudson, Brown and Smith are inactive.