Education
of Korea University.
of Korea University.
Kim Oh-Sung was drafted to Daegu Football Club in 2009. He made his Daegu Football Club first-team debut on 20 June 2009 in a match against Suwon Bluewings, coming on as a substitute after 82 minutes of play. Kim made a further four K-League appearances during the season.
Following limited on field play during the 2010 season (only one match), Kim joined R-League side Police Football Club to comply with his two year military service obligations.