Your League in Ping Pong Fury represents your status and grants you access to awesome perks, such as extra points per equipment card you find in pods. Higher leagues will give you better perks, so be sure to reach the top!
A League is based on your current Fans from all Arenas. As you earn more Fans, you'll advance through different Leagues. To find more details on all Leagues, tap on the Fan card while on the main menu.
Here you will find the Fans needed to reach all Leagues, as well as the perks for that League.