Hill will start and the 49ers' starting offense is expected to play approximately a dozen snaps, Singletary said. Running back Frank Gore and receiver Isaac Bruce will not suit up for the game.

Third-string quarterback Nate Davis is slated to play more than three quarters, as Alex Smith will not play because of a thumb sprain.

Safety Michael Lewis (concussion), linebacker Jay Moore (groin), linebacker Ahmad Brooks (knee), center Cody Wallace (viral meningitis), receiver Brandon Jones (shoulder) will not suit up for tonight's game, Singletary said.

For more on the 49ers, go to Instant 49ers at http://blog.pressdemocrat.com/49ers. You can reach Staff Writer Matt Maiocco via e-mail at matt.maiocco@pressdemocrat.com.