The National Football League is the largest and most prestigious professional American football league comprising 32 teams that are spread across America.

It was formed in 1920 as the American Professional Football Association and adopted the name National Football League in 1922.

A total of 32 teams are there in NFL. The league's teams are divided into two conferences: The American Football Conference (AFC) and the National Football Conference (NFC).

The league season culminates with an annual 14-team playoff tournament leading to the Super Bowl championship game

The NFL has headquarters in New York City and since 1963 has maintained the Pro Football Hall of Fame in Canton, Ohio

NFL top 5 power rankings - Week 4

Rank 1-  Philadelphia Eagles 3-0

Rank 2 -  Buffalo Bills 2-0

Rank 3 - Miami Dolphins 3-0

Rank 4- Green Bay Packers 2-1

Rank 5- Kansas City Chiefs 2-1