No amateur resultsProfessional record| Date | Opponent | Place | Result |  | 1978 |  | - Oct. 8 | Mun-Pyo Chang | Seoul, South Korea | L 4 |  | + Nov. 17 | Chong-Soo Kim | Seoul, South Korea | W 4 |  | + Dec. 6 | Hee-Baek Lee | Seoul, South Korea | W 4 |  | + Dec. 8 | Man-Soo Han | Seoul, South Korea | W 4 |  | - Dec. 9 | Mun-Pyo Chang | Seoul, South Korea | L 4 |  | 1979 |  | + Jan. 12 | Jae-Young Song | Seoul, South Korea | W 6 |  | + Mar. 10 | Kwon-Song Chung | Seoul, South Korea | W 6 |  | + July 12 | Mun-Pyo Chang | Seoul, South Korea | W 6 |  | + Nov. 24 | Chong-Sok Chang | Daegu, South Korea | W 8 |  | 1980 |  | + Jan. 27 | Satoshi Koguchi | Osaka, Japan  | W 6 |  | + Apr. 13 | Jae-Hun Lee | Daegu, South Korea | W 8 |  | + June 21 | II-Nam Lim | Seoul, South Korea | KO 7 |  | 1981 |  | + Apr. 5 | Kwong-Yul Yuh | Seoul, South Korea | W 8 |  | + June 21 | Ryong Yun | Seoul, South Korea | W 6 |  | + Aug. 16 |   Ki-young  Chung | Seoul, South Korea | W 10 |  | vacant South Korean Super Bantamweight Title |  | + Nov. 29 | Kyo-Sok Han | Seoul, South Korea | W 10 |  | 1982 |  | + Feb. 21 | Kongkiat Sithmanoon | Seoul, South Korea | KO 3 |  | + Apr. 18 | Dado Muryado | Seoul, South Korea | KO 2 |  | + July 18 | Duk-Hwan Bae | Seoul, South Korea | TKO 9 |  | + Oct. 31 | Byung-Kuk Oh | Masan City, South Korea | KO 7 |  | 1983 |  | + Feb. 20 | Sandy Noora | Seoul, South Korea | KO 5 |  | + June 17 | Chris Maratas | Seoul, South Korea | KO 1 |  | - Dec. 4 | Bobby Berna | Seoul, South Korea | TKO by 10 |  | vacant IBF Super Bantamweight Title |  | 1984 |  | + Apr. 15 | Bobby Berna | Seoul, South Korea | TKO 10 |  | IBF Super Bantamweight Title |  | + July 8 | Cleo Garcia | Seoul, South Korea | KO 4 |  | IBF Super Bantamweight Title |  | 1985 |  | - Jan. 3 | Ji-Won Kim | Seoul, South Korea | KO by 10 |  | IBF Super Bantamweight Title |  | - Oct. 9 | Ji-Won Kim | Seoul, South Korea | KO by 1 |  | IBF Super Bantamweight Title |   
  
Summary
Total bouts: 27, Won: 22 (9 inside the limit), Lost: 5 (3 inside the limit), Draw: 0, NC: 0 
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