Digital Vision./DigitalVision via Getty Images On Sept. 5, the 2024/2025 NFL Season will start with a match between the Baltimore Ravens and the defending champions, the Kansas City Chiefs. If the 2023/2024 season was any indication, this is going to be a great game! That said, did you know that in 2022, the National Football League generated $18 billion in revenue? That's according to a list compiled by Wikipedia. This number makes it the biggest league in the world - by a huge margin. Number two on the li ...