Jong-soo Ko
MF · Born October 30, 1978
Age in each playoff game
- 1998 Group stage (June 13, 1998), South Korea vs Mexico 1–3: 19 years, 226 days
- 1998 Group stage (June 20, 1998), South Korea vs Netherlands 0–5: 19 years, 233 days
- 1998 Group stage (June 25, 1998), South Korea vs Belgium 1–1: 19 years, 238 days
Age in each season
- 1998 (South Korea): 19 years, 223 days to 19 years, 255 days