5 Defensive Linemen the 49ers Should Be Evaluating at the NFL Scouting Combine

Without a doubt, the San Francisco 49ers defensive line has more questions than answers right now. Isaac Sopoaga and Ricky Jean Francois are impending free agents, and Justin Smith is coming back from a fairly serious triceps injury.

There's no guarantee that Sopoaga and Jean Francois will be back with the club, nor is there any guarantee that S...

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