The Pittsburgh Steelers own a 76-59-1 record over the Cleveland Browns and when the games are played in Pittsburgh, they are even more dominant at 48-21. In Heinz Field the Steelers led their rivals 17-1 having won 15 straight.
The rivalry began in 1950 when the All-American Football Conference folded and three of the AAFC teams entered the NFL. The 49ers and Colts were joined by a Browns team that had won all four of the AAFC championships under head coach Paul Brown.
The Browns dominated the early years before the Steelers began to come into their own during the seventies.