When these teams met in September, it was a 17-10 Chiefs victory. While the Chargers have opened up the offense in recent weeks but the fact remains that the defense is the straw that stirs the drink for Jim Harbaugh's squad. Kansas City has gotten healthier with some pieces coming back in the last couple of weeks but their offense continues to sputter at times. With a pair of stout defenses, this has the makings of a rock fight where 20 points may be more than enough to win it. Take the under as a result.