Why the San Francisco 49ers Should Switch To A 4-3 Defense

The San Francisco 49ers have made a living stuffing the run with Vic Fangio's patented 3-4 defensive front. Is it time to change that philosophy?

Two NFC playoff hopefuls, the San Francisco 49ers and New Orleans Saints, go toe-to-toe this Sunday. Here are five things you need to know.
Week 9 features plenty of great match-ups, including a must-win for the 49ers. Can the 49ers' defense contain Drew Brees and Mark Ingram?
The NFC West is turning out to be somewhat different to how many predicted it would. Can Arizona really keep their run off form to claim it?