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Ex-NFL Player Walker Sues League Over Concussions

DETROIT (AP) — Former pro football player Derrick Walker has filed a lawsuit against the NFL, accusing it of not warning him about the risk of football-related concussions.

Walker's lawsuit, filed Monday in Detroit federal court, is one of many across the country by retired players. Walker played tight end in the 1990s for the San Diego Chargers, Kansas City Chiefs and Oakland Raiders. He lives in West Bloomfield, a Detroit suburb.

Walker says he suffers from memory loss, headaches and sleeplessness. Besides the NFL, his lawsuit also names football equipment companies as defendants.

The NFL has vowed to vigorously defend itself against such lawsuits. The 45-year-old Walker played college football at Michigan.

(© Copyright 2012 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)

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