NFL: Concussion issue a major headache for NFL – The Mercury
Bears Legend Doug Plank Thinks He Could Help Matt Eberflus
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Bears Legend Doug Plank Thinks He Could Help Matt Eberflus
Down and Out – Texas Monthly
How will Matt Eberflus's H.I.T.S principles work for the Chicago Bears?
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Buddy Ryan a beloved teacher to Dan Hampton, Mike Singletary, others
At 66, former Bears safety Doug Plank has no regrets about his ferocious playing style - Chicago Sun-Times
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