NFL concussion specialists stepping down
Commissioner Roger Goodell has sent a wide-ranging memo about concussions to NFL teams, saying the co-chairmen of the league's committee on head injuries have resigned.
Goodell writes that Dr. Ira Casson and Dr. David Viano no longer will lead the NFL's committee on concussions. Casson has come under attack recently from the NFL Players Association and members of Congress for criticizing independent and league-sponsored studies linking NFL careers with heightened risk for dementia and cognitive decline.
· The Buffalo Bills consider two-time Super Bowl winner Mike Shanahan a legitimate candidate to be their next head coach. A person familiar with the Bills' search told The Associated Press that the team has contacted the former Denver Broncos' coach.
· The Bills began reinforcing their injury-depleted offensive line by signing veteran guard Kendall Simmons, who started 80 games for the Steelers before being released in September.
· Dallas Cowboys tight end Jason Witten will be a game-time decision for Thursday's game against Oakland because of a sprained foot.
· New York Giants running back Brandon Jacobs said his injured right leg feels "really good" and he should play against Denver tomorrow, but backup Ahmad Bradshaw has a sprained left ankle that could sideline him.
· Byron Leftwich's season is over after the Tampa Bay Buccaneers put the backup quarterback on injured reserve with a sore right elbow.
· The Detroit Lions practiced Tuesday without quarterback Matthew Stafford and wide receiver Calvin Johnson. Stafford's left shoulder was dislocated in Sunday's 38-37 win over Cleveland. Johnson has hand and knee injuries.
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