Question

What are the only two current NFL franchises that played in a game against each other over 100 years ago?

Answer

Chicago Bears and Arizona Cardinals. They’re the only teams in the league that were part of the original league back 1920 (operating as the Decatur Staleys and Chicago Cardinals) and they played against each other twice that year. Bears-Packers is considered by many to be the league’s most storied rivalry, but Green Bay didn’t join the league until the second year (that series becomes 100 years old in November).