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Vilma: Distressed 49ers Defense Will Return to Top-5 Form for Playoff Push

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The San Francisco 49ers have had a top-five defensive unit the past three seasons.

Can the Niners find the same success in 2014? When will the defense begin to click? Which young players might step up?

Watch as Stephen Nelson goes in-depth with Bleacher Report NFL Analyst Jonathan Vilma in the video above. 

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