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By JANIE McCAULEY
AP Sports Writer
SANTA CLARA, Calif. (AP) - San Francisco 49ers quarterback Alex Smith went through position work in a non-contact black jersey Wednesday, his status still unclear for Monday night's NFC showdown with the Chicago Bears after he sustained a concussion Sunday against the Rams.
Coach Jim Harbaugh kept an eye on Smith from several yards away as he worked with backup Colin Kaepernick and No. 3 QB Scott Tolzien to get his reps.
Smith would have had to pass concussion tests given by a neurologist to get this far and return to the practice field, but there are still further steps in the process for him to be medically cleared for game action.
Harbaugh said Smith experienced blurred vision on a 1-yard quarterback sneak early in the second quarter of Sunday's 24-24 tie.