Riot Games has annouced a new policy for toxicity that will prevent disruptive players from even queuing for ranked games.
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League of Legends - Dexerto
League of Legends Pro Players Banned for Toxic Behavior - GameSpot
Riot may be ditching League's Duo queue for Solo-Only mode - Dexerto
Toxicity OP.GG Esports
Riot announces toxic League of Legends players will be unable to queue for ranked games - Dexerto
Opinion] Does Riot Korea even care? An in-depth look into the state of toxicity in KR solo queue - Inven Global
RANKED QUEUE DISABLED FOR TOXIC PLAYERS - League of Legends