The New Orleans Saints open up their preseason tonight at home against the San Francisco 49ers. While many fans will focus on some of the "big name" newcomes like Darren Sproles and Shaun Rogers, the defensive coaching staff will be busy keeping tabs on several position battles.

The defensive end rotation and depth chart will be sorted out this preseason. The same thing can be said for the strongside and weakside linebacker spots.

Here is more from James Varney of the Times Picayune and nola.com.

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