FILE - In this Dec. 26, 1976, file photo, Oakland Raiders quarterback Ken Stabler is helped from the field after a hard tackle by the Pittsburgh Steelers in the third quarter of theAFC championship NFL football game in Oakland, Calif. Stabler, the late NFL MVP and Super Bowl winner who is a finalist for the Pro Football Hall of Fame, has been diagnosed with the brain disease CTE, Boston University researchers say. (AP Photo/File)
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