Hill, the sixth-year pro who hadn't thrown an NFL pass until this month, will miss San Francisco's season finale with back spasms caused by three small fractures incurred from a hard hit in last week's victory over Tampa Bay. Dilfer is out for the season with a concussion, and Smith is on injured reserve with a separated shoulder.
Receiver Arnaz Battle and running back Michael Robinson -- both successful college quarterbacks -- will be the No. 3 quarterback, though Robinson is questionable for the game with a shoulder injury.
Copyright 2007 by The Associated Press