It is reckoned that the first professional footballer in the US was Yale All-American Guard William Heffelfinger in 1892. However we have to span the years until after the First World War with the formation of theAmerican Professional Football Association. This included ten teams from four different states but only lasted two seasons until the National Football League was created. The world has changed a lot since then, evidenced by the fact that only two of today’s NFL teams were among the founders, namely the Decatur Staleys (now the Chicago Bears) and the Chicago Cardinals (now the Arizona Cardinals). The oldest continuous franchise is the Green Bay Packers – keeping the same name and staying in the same place!