ALAMEDA, Calif. (AP) - It's the run defense one game, the pass defense the next and the running game almost every week that is holding the Oakland Raiders back.

The problems keep mounting almost as fast as the point total for the opposition.

A week after being gashed on the ground by Doug Martin and the Tampa Bay Buccaneers, the Raiders were taken apart through the air by Joe Flacco and the Baltimore Ravens in a 55-20 loss Sunday that matched a franchise worst for points allowed in a game.

Coach Dennis Allen called the performance ``unacceptable'' and said the entire defense should be on edge after Oakland (3-6) allowed 97 points the past two weeks.