The K League Classic is the top professional football league in South Korea, established in 1983. It features a competitive format where teams compete for the championship title each season. The league consists of 12 teams, and matches are held from February to December. The K League Classic is known for its passionate fan base and has produced many talented players who have gone on to represent South Korea in international competitions. The league operates under the governance of the Korea Football Association and is part of the larger K League system, which includes the second-tier K League 2.