A look at the strengths, weaknesses, rehab issues and what to expect in the NFC West, as provided by SN's NFL correspondents: San Francisco 49ers The strength: Led by Patrick Willis, the 49ers have a fast, aggressive linebacking crew. Their defensive philosophy is to take away the big play and trust the linebackers to take care of any short plays in the middle of the field. The 49ers don't have a sack master on the squad, but they have six players capable of registering six sacks. View full post on Yahoo! Sports – NFL – San Francisco 49ers News