Prior to the 16-game season era, Joe Namath was the only QB in pro football history to throw for 4,000 yards in a season.

At the conclusion of the 16-game season era, the Chicago Bears and… the New York Jets were the only teams to not have a 4,000-yard passer from ’78 to ’20.

— Football Perspective (@fbgchase) March 28, 2021