I bet this a couple days ago, both teams are pretty banged up and lack motivation, but the way I see it the Raiders actually like their interim coach Antonio Pierce and should at least play hard for him, whereas the Chargers players probably know they have a lame duck at the helm and are merely playing out the string.
Plus, getting blanked on your home field like LVR did last game is always an embarrassment for anyone calling themselves a professional. That might be the spark for them to get to double digits tonight, who knows.