"Johnson appeared in 13 games last year, mostly on special teams. He started the San Diego game (November 21) at defensive end when injuries had wiped out two Bills starters. Mark was credited with 14 tackles last year. He saw action in 11 games in 1975, starting twice at outside linebacker. A strong, vicious tackler, he's a leader on the special units.
He earned All-Big Eight honorable mention honors in 1974 after recovering from spring knee surgery. He led Missouri in total tackles in 1973 and 1974, totaling 198 tackles in two years, and had 16 quarterback sacks plus a fumble recovery in 1974. Mark played in the 1975 Hula Bowl.
Mark is a physical education major who enjoys horseback riding, basketball and movies. He's nicknamed 'Country.'"
-Buffalo Bills 1977 Press-Radio-TV Yearbook