The San Francisco 49ers are learning a new defense, and it might get complicated. How will this play out in 2015?
The San Francisco 49ers are in the midst of installing their first new defense since 2011. That year, Vic Fangio joined Jim Harbaugh in moving from Palo Alto to Santa Clara. While Harbaugh had oversight over the entire team, Fangio effectively was the head coach of the defense. The group had talent prior to Fangio's arrival, but his coaching staff helped that unit take several huge steps forward.
Now, Eric Mangini is installing his defense, and naturally the team's defensive leaders are getting questions about it.