They have the potential to have a great defensive outing any week. Unfortunately, they're not disciplined enough or giving their all and then teams can pick them apart pretty easily. It's been pretty much feast or famine. I'm hopeful the Detroit game kicked them in the ass watching film and come out all guns blazing.This idea that the 49ers don't have a good defense is interesting, they were easily a top 10 defense, probably top 5 over the course of the regular season.