K League 1

In the 2009 season, Gangwon FC (Head Coach: Choi Sun-Ho, former Ulsan Hyundai Mipo Chosun head coach) joined the K-League as its 15th member club. As such, the K-League had one or more club in every Korean Province (Gyeonggi, Gyeongsang, Jeolla, Chungcheong, Gangwon, and Jeju). This is the first time in domestic Korean professional sports history that there has been at least two clubs in each Korean province.