History
The K3 League had an exhibition season held in two stages with ten teams in 2007. The winners of both stages and the best two clubs in the overall standings qualified for the championship playoffs and the 2008 Korean FA Cup. Seoul United became inaugural champions after winning the championship playoffs. After the league was officially launched in 2008, the number of participating clubs was increased to 18 until the 2010 season, while new clubs registered in the league or some of the existing clubs were dissolved due to financial problems. Seoul Pabal, which engaged in match-fixing scandal during the 2008 season, was also dissolved at that time. It was renamed the ''Challengers League'' in 2011 and the ''K3 Challengers League'' in 2014, but used original name again since 2015 after being criticised for being confused with a youth league ofCompetition format
Regular season
*2007–2008: After the regular season was operated in two stages, the winners of both stages and the best two clubs in the overall standings qualified for the championship playoffs. *2009: All clubs played home and away season, and the championship playoffs were not held. *2010–2012: The participating clubs were divided into two groups, and the winners and runners-up of both groups qualified for the championship playoffs. All clubs had interleague play once after playing home and away season in each group. *2013–2015: The third-placed clubs of both groups also qualified for the championship playoffs. *2016–2019: All clubs played in a single league without groups, and the top five clubs qualified for the championship playoffs.Championship playoffs
*2007–2011: All four clubs entered in the semi-finals. *2012: On the basis of the overall standings, third and fourth-placed club entered the first round, and first-placed club directly advanced to the final (third round). *2013–2015: On the basis of the overall standings, first and second-placed club directly advanced to the final and semi-final respectively, and the other four clubs entered the first round. *2016–2019: The winners of the regular season directly advanced to the final, and the other four clubs entered the first round.All-time clubs
Champions
Champions by season
Performance by club
Champions by season (Basic)
See also
* K3 League * K4 League * Challengers Cup *References
External links