An started to learn football professionally when he was 18 years old and a second-year student in high school.

[1] An became a founding member of professional club Ilhwa Chunma in 1989 despite starting football very late.

[1] In 1994, he played five friendlies for the South Korea national football team prior to the 1994 FIFA World Cup due to his performances.

[3] An was part of the South Korean national football team in 1994 FIFA World Cup.

This biographical article related to a South Korean association football defender is a stub.