Despite finishing as the NFL's second-ranked scoring defense last year (14.3 ppg), the 49ers weren't able to install DC Vic Fangio's complete playbook due to the lockout and not having OTAs last year. "Now when we're in meetings and whatnot and we'll learn something and we'll look at each other and be like, 'How did we play a whole season last year without knowing that?'" LB Patrick Willis said.