How do leagues work?

[Lutherj]

1. It's a hidden rating system so we don't know exactly how it works. We do know that winning is obviously key, but also that who you win against is also significant.

2. Yeah its frustrating huh? It's basically a placebo designed to make you wanna play more. Somehow though it still works....I really wanna see my name at the top of my random 100 players list.