St. Louis Rams running back Steven Jackson carries the ball into the end zone for a touchdown past San Francisco 49ers free safety Dashon Goldson, right, during the first quarter of an NFL football game in San Francisco, Sunday, Nov. 11, 2012. (AP Photo/Marcio Jose Sanchez)

Photo by: Marcio Jose Sanchez

St. Louis Rams running back Steven Jackson carries the ball into the end zone for a touchdown past San Francisco 49ers free safety Dashon Goldson, right, during the first quarter of an NFL football game in San Francisco, Sunday, Nov. 11, 2012. (AP Photo/Marcio Jose Sanchez)