According to Matt Maiocco of the Press Democrat, running back Frank Gore will not play today against the Atlanta Falcons.
Running backs Michael Robinson and Maurice Hicks will take over the rushing duties for the 49ers. The two will alternate in and out of the offense.
We would normally just link to Matt's article on his blog, Instant 49ers, however, at the time of this writing, there was no actual article content in the blog.