Türkiye Championship League, downgraded to tier 3 and no longer directly has spots to MSI and Worlds, become a qualification of tier 2 event EMEA Masters
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"Established" and "ended" refers to the years the tournament hosted a League of Legends tournament, not necessarily the years the competition itself was held.
Known as the European League of Legends Championship Series (EU LCS) before franchising in 2019, and League of Legends European Championship for Europe region until 2023.
Starting 2023, the LEC has been divided into three splits which grant championship points to qualify for its Season Finals, the latest being won by G2 Esports in September 2023.
Refers to the People's Republic of China and does not include Hong Kong and Macau. Although players from Hong Kong and Macau are explicitly accepted as domestic players in the LPL, they de facto share "PCS" residency with players from Taiwan and Southeast Asia (except Vietnam).
The PCS' definition of Southeast Asia extends only to teams from the following countries which host LoL servers: Indonesia, Malaysia, Philippines, Singapore and Thailand. However, players from Brunei, Cambodia, Laos, Myanmar, and Timor-Leste are also considered PCS players.
Consists of semi-professional and amateur teams; losing professional teams from OnGameNet (predecessor of League of Legends Champions Korea) also participate.
"Emerging regions", refers to any region without an automatic spot in the World Championship main event, that is, excluding China, South Korea, North America, Europe and Taiwan/Hong Kong/Macau. Champions of leagues marked with "IWT" participated in the IWC.