Colin Kaepernick will replace Smith, who is out with a concussion.
49ers’ Alex Smith out vs. Bears with concussion

Mark J. Rebilas-US PRESSWIREKaepernick took over for Smith in the second quarter last week, and went 11-for-17 for 117 yards. He also rushed for 66 yards and a touchdown. However, his task will be much more difficult this week, as he’ll face a Bears team that ranks second in the NFL in scoring defense. The 49ers have the top-ranked scoring defense.
Read Article >The week of the backup QB

Gregory ShamusCall this the weekend of the backup quarterback in the NFL.
Four starting quarterbacks went down with injuries last week, putting their status for Week 11 in jeopardy.
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