Challengers Korea is the second tier of competition in South Korean LoL esports, directly seeding into League of Legends Champions Korea, the country's premier LoL league.
Like most LoL leagues, Challengers Korea is split into three stages with qualification, regular season, and playoffs. The two strongest teams at the end of the season qualify for the 2020 LCK Summer Promotion tournament, with a shot to take their place in the league.
Played as a double Round Robin with matches being Best-of-Three. Top 4 teams qualify for the Playoffs, with winners and second place teams receiving a bye into the finals and the semi-final, respectively.
Single elimination bracket with Best-of-five series.