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The R League (Korean: R리그), also known as the Korean Professional Football Reserve League, is the league for reserve teams of professional football clubs in South Korea.
History
The Korean Reserve League was started in 1990 with reserve teams of five K League clubs.
It was not held for nine years after the inaugural season, but was relaunched in a new format in 2000. The participating teams were split into two or three group leagues, and the highest ranking teams of each league qualified for playoffs to determine the overall champions. It was renamed "R League" in 2009. The Korea Police FC participated in the R League until 2012, although it was not a reserve team of a K League club.
The R League was abolished in 2013 following the foundation of the K League 2, which needed participating players, but was restarted in 2016. It was once again ceased in 2020 due to the COVID-19 pandemic. In 2021, the Korea Football Association (KFA) allowed reserve teams to join the football league pyramid through the semi-professional K3 League and K4 League. Plans to resume the R League were scrapped due to a lack of participating teams as a number of teams elected to participate in the K4 League instead.
Yoon, Eun-yong (19 January 2021). "K리그 구단들, 올해부터 B팀 운영 가능" [Starting this year, K League teams can operate a B team]. Sports Kyunghyang (in Korean). Retrieved 23 January 2025.
"사라진 R리그, 적은 출전기회… U20 대표팀 경기감각 우려" [Disappearance of R League leads to lack of playing opportunities, concern for U20 national team's match sense]. Chosun Ilbo (in Korean). 9 May 2023. Retrieved 23 January 2025.
"The Official K-League Almanac" (in Korean). K-League editorial division.