Programming note: Immediately after the Chiefs-49ers game, change the channel to Comcast SportsNet Bay Area for 49ers Postgame Live.
The 49ers run defense catches a groove; huge challenge upcoming for tackle Jonathan Martin; the key to Justin Smith's reign of terror.
Editor's note: 49ers head coach Jim Harbaugh addressed the media on Friday from Santa Clara. Below is a full transcript of his comments.
Programming note: For comprehensive 49ers coverage from Santa Clara, tune in to SportsNet Central tonight at 4:30, 10:30 and midnight on Comcast SportsNet Bay Area.