Former NFL linebacker who played for the Buffalo Bills and the Los Angeles Rams; he went to six Pro Bowls as a member of the Rams.
He played football at Southern University, where he made 112 tackles and had 45 assists in his senior year.
He was treated for crack cocaine addiction in the 1970s and eventually founded the House of Isiah drug rehab center in Mabank, Texas.
His wife kicked him out of their home at one point because of his drug use.
He played four seasons with the Buffalo Bills, retiring a few years before eventual Hall of Fame quarterback Jim Kelly was drafted.