1940 NFL Championship Game won 73–0, the most one-sided victory in NFL history. The game was broadcast on radio by Mutual Broadcasting System, the first NFL title game broadcast nationwide. Washington had defeated Chicago 7–3 in a regular season game three weeks earlier in Washington. After the contest, Redskins owner George Preston Marshall told reporters that the Bears were crybabies and quitters when the going got tough. As the Bears prepared for the rematch, Chicago head coach George Halas fired up his team by showing them newspaper articles containing Marshall's comments. Before the game, Halas's friend Clark Shaughnessy, who was concurrently coaching the undefeated
1967 NFL Championship Game employed in their sweep. Although the Packers and the Chicago Bears were arch-rivals, Lombardi's most passionate game planning was in preparing for Landry's "Flex". Saturday, on the eve of the game, NFL commissioner Pete Rozelle called Jim Kensil and Don Weiss, the executive directors of the NFL, for an update on the weather conditions. It is suspected that they informed him that Sunday's game time temperature of about 5° was playable. Rozelle, who in June 1966 had seen to it that the AFL-NFL Championship game would always be in a warm weather city, inquired if the game could be postponed