NFL is invented in 17th September 1920

The National Football League (NFL), a group of professional teams that was originally established in ...

1920 as the American Professional Football Association, aimed to solve these problems  

American Professional Football Association (APFA), now known as the National Football League (NFL)

Walter Camp is considered the “founder” of American football

The NFL Professional Game played between Dayton Triangles and the Columbus Panhandles on 3rd October 1920 at Dayton's Triangle Park 

Chicago Cardinals is the oldest team in the NFL 

Tepper, whose Tepper Sports & Entertainment is the most richest owner in NFL 

Ravens are currently on a whopping 22-game winning streak in preseason games dating back to 2016 

In NFL preseason consist 272 games. with each of the NFL's 32 teams playing 17 games during an 18-week period with one "bye" week off.