The 49ers Commitment to Defense Has Made Them True NFC Contenders

Video Rating:
TV-G
Video Duration:
1:53

The San Francisco 49ers are 5-0 for the first time since 1990, but what is the cause of their unexpected success? The MMQB's Albert Breer discusses how the team's decision to invest on the defensive side of the ball, is why they have flourished through the first quarter of the season.