File this under “cable confounds broadcast again”: CBS is losing an NFL rivalry game between the Oakland Raiders and San Diego Chargers this Sunday because grounds crews won’t have enough time to convert the O.co Coliseum from a diamond to a gridiron after a baseball playoff game the night before. Major League Baseball didn’t announce the start time for Saturday’s Game 2 of the American League Divisional Series, hosted by the Oakland A’s, until late Monday afternoon. Now the football game has been moved from 1:25 PM PT to 8:25 PT — and from CBS to the NFL Network. With Raiders-Chargers starting in primetime in the West, it should draw a huge number, especially in LA, an NFL-free city where both teams have large fan bases. That can’t be good news for broadcast networks so early in the new TV season or for HBO and Showtime, which have high-profile Sunday dramas Boardwalk Empire and Homeland, respectively. NBC has its regularly scheduled Sunday Night Football game, which should bleed into the start of Raiders-Chargers. NFL Network should send out sympathy cards to rival nets – right after that thank-you note to MLB.