Making his first mark on the football field, Choi Yun-Kyum made his debut in the K-League in 1985 as a Yukong Elephants defender. As a player, he appeared in 162 games. He was selected in the National Olympic Team and National A-Team, playing 5 games at international level. He also had a chance to play in the 1988 Seoul Olympics. He retired as a football player in 1992.
Bucheon and Choi
After retirement, Choi decided to live the so-called "footballer's second life" by becoming a coach. He started his coaching life as a Training Coach at Bucheon SK, since renamed Yukong Elephants. Two years later, he was promoted as a Coach. Four years later, he was chosen to become the Assistant Coach. Finally, after years of diligence, Choi was appointed as Bucheon SK's head coach for the 2001 season. However, though he had no problems with the team and was able to lead it fairly well, the Bucheon SK board decided to change their manager. Bucheon SK's fans protested, but the decision wasn't reversed.
Coming back to hometown
In 2003, after the poor results of their 2002 season, Daejeon Citizen FC selected Choi as their coach. Choi, originally from Daejeon, willingly came back to his hometown. The lack of results in 2002 was frustrating for fans and players, and confidence was low. However, Choi inspired the team and completely changed it by implementing the 4-3-3 formation. The outcome was a near miraculous recovery from 2002, and he, together with Daejeon Citizen F.C., coined the catchphrase "Miracle 2003". Daejeon Citizen finished the 2003 season in 6th place, its best finish ever in the league, and at the same improved its average home game attendance to about 18,000 people. After 2003, although Daejeon Citizen was not able to make repeat its result of 2003, Choi was still considered a hero at the Daejeon World Cup Stadium. He continued his role as manager into the 2007 K-League season, before being replaced mid-season by Kim Ho. In addition to his excellent management skills, Choi is also famous for his humble personality - a key factor in ensuring a harmonious team. "I want to make this the team that a player chooses on his own volition, and not by my own will or force. I shall not buy abilities and just gather the best players. This will be a team played by humans, a team that players love, and a team who dreams the same dreams as the fans." On October 10, 2011, he signed a one-year contract to V-League's Hoàng Anh Gia Lai - one of the most popular football club of Vietnam.
Choi returned to the K League 2 managing Gangwon FC in 2015. He managed to lead them to the K League 1 via the playoffs in 2016. In 2018, Choi left Gangwon to become the manager of K League 2 team Busan IPark, but resigned after only one season after failing to gain promotion. Busan IPark finished third in the K League 2 but lost to FC Seoul in the promotion/relegation playoff final.
