leagued out

When you play a game of league and lose (typically) and do not want to play anymore.

Gold 2 player: Hey man, want to play a game once you're done?
Bronze player: Sure! I'm not doing too well in this game though...
(GAME ENDS, BRONZE LOSES)
Gold 2 player: Game?
Bronze player: Naw, I'm leagued out. I'm gonna go cry in a corner into my Sona doll.