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. 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 list is Major League Baseball, with $11.3 billion in 2023 revenues. The mighty English Premier League is number four on the list, with $6.5 billion in 2021/2022 revenues.