Harrison estimates he has had nearly a dozen concussions

Pittsburgh Steelers linebacker James Harrison said Tuesday he has had nearly a dozen concussions in his career that have gone unreported and undisclosed, according to the Pittsburgh Tribune-Review.

At a time when the NFL is trying to make the game safer and keep severe head injuries to a minimum by policing the game more strictly in terms of injuries, Harrison's statement should set off plenty of alarms.

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Terry McCormick covers the Titans for TitanInsider.com

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