League of Legends Champions Korea (LCK) , previously known as Ongamenet LCK (OGN) from their sponsorship by Ongamenet, is the top level of professionalLeague of Legends competition in Korea. Games are played out of the Yongshan e-Sports Stadium in Yongsan District, Seoul. The LCK is usually regarded as the strongest LoL league in the world. League of Legends developer Riot Games provides an English language broadcast of LCK games.