Watching that drive as I type... AD roughing call on a sack, 10-yard scramble by Edwards and a good play call by the Bills for the scoring screen pass are the plays that made that drive. I didn't exactly see BAD defense. After watching a second time, I think the D played very well throughout the whole game. Considering how young our D is, as well as moving Guyton inside at a moments notice, I am very optimistic for this year.
Edit: The plays I HATED were at the end of the game when some guys on the D (Burgess was one) were busy celebrating instead of getting back and concentrating on finishing the game. I was yelling, "Goda**it, we need to get the Raider out of that f***er!"