 K League 2 was founded in 2013 and is currently a second division.Below the level of the professional leagues is the semi-professional K3 League was founded in 2007, refounded in 2020 and K4 League was founded in 2020, which serves as the third division and fourth division, respectively.There was no avenue for progression between any of the leagues until 2012, when the K League 2 was founded.