Duk-koo Kim losses
Over 4 years as a professional, Duk-koo Kim compiled a 17-2-1 (8) record, including five title fights. He had two losses, one of them in a title fight.
2. Duk-koo Kim loses to Ray Mancini via KO
On November 13, 1982 Duk-koo Kim fought Ray Mancini for the WBA lightweight title. Kim was 27 years old with a record of 17-1-1, and Mancini was 21 with a record of 24-1. Kim was on a 12-fight winning streak and Mancini was on a 4-fight winning streak. Mancini stopped Kim via KO in the 14th round. Failed to capture the title. Lasted into the 14th round.
1. Duk-koo Kim loses to Jong Sil Lee via points decision
On December 9, 1978 Duk-koo Kim faced Jong Sil Lee. Kim was 23 years old with a record of 2-0, and Lee was 0 with a record of 0-0. Kim was on an undefeated 2-fight winning streak. Kim lost via points decision. Went the distance with Lee.