Gale Sayers withdraws concussion lawsuit he says he didn’t authorize

As the settlement of the 4,500-plus concussion lawsuits trudges forward, other suits may pop up.  At least one has disappeared as quickly as it arose. Hall of Fame running back Gale Sayers has withdraw a concussion lawsuit against the NFL.  Per Fred Mitchell of the Chicago Tribune, Sayers contends it was filed without his authorization.…