Chris Perkins: Dolphins follow familiar theme (talented player/elevated injury risk) with addition of David Long Jr.

Chalk one up for Miami Dolphins general manager Chris Grier.Actually, I should say chalk up one more for Grier, and I mean that on a couple of levels.The Dolphins recently signed inside linebacker David Long Jr. from the Tennessee Titans during free agency, and by most accounts Miami got a versatile and athletic player.

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