Two-Time Superbowl winner Jim McMahon chats to Joe Molloy about his legendary career and the aftereffect of head injuries since retirement.
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Chicago Bears legend Jim McMahon | "I would lay in darkness for days" | Super Bowl glory & battle with CTE
Two-Time Superbowl winner Jim McMahon chats to Joe Molloy about his legendary career and the aftereffect of head injuries since retirement.