The team had a tremendous amount of heart, which was demonstrated by the fact that they had key commanding wins throughout the season.
For instance, they swept their arch rival New York Giants, who the previous year had edged them out as the eastern conference champion.
The top receivers of the team were Paul Warfield and Gary Collins, the second of whom would become a legend by catching three touchdowns in the championship game against the heavily favored Baltimore Colts.
The game-time temperature that day was 34 degrees and felt much colder in 15- to 25-mph winds whipping under gray December sky.
Brown's running back Ernie Green reported after the game about half time, "We cleaned ourselves and sat down, and it seemed like something came over all of us.
Gary Collins became a Cleveland Browns legend by catching three touch down passes, the third one being a 51-yarder with Colts defender Bobby Boyd all over him.
Not only is it remembered in Cleveland but ESPN ranks the '64 title game as the second-greatest NFL postseason upset, behind only Joe Namath's guaranteed win over the Colts in Super Bowl III four seasons later.