 Since joining the club at first, he failed to make any appearances for the club in the first three years, due to becoming an understudy to first choice goalkeeper, Kim Byung-ji.Because of this, Jung Sung-ryong had thoughts of joining the army but was talked out of it by then the club's reserve coach, Park Tae-ha, who told he would get his chance.Ahead of 2006 season, it was expected from Sports Naver that Jung Sung-ryong is going to play in the professional stage.