Ko Seok-hyeon losses

Over 9 years as a professional, Ko Seok-hyeon has compiled a 13-3 (6) record, fighting across four weight classes. He has three losses.

1. 3. Ko Seok-hyeon loses to Jean-Paul Lebosnoyani via unanimous decision

   On July 18, 2026 Ko Seok-hyeon faced Jean-Paul Lebosnoyani in a welterweight bout. Seok-hyeon was 32 years old with a record of 13-2, and Lebosnoyani was 27 with a record of 10-2. Seok-hyeon was on a 6-fight winning streak and Lebosnoyani was on a 5-fight winning streak. Seok-hyeon lost via unanimous decision.

2. 2. Ko Seok-hyeon loses to Han Seul Kim via KO

   On December 30, 2021 Ko Seok-hyeon faced Han Seul Kim in a welterweight bout. Seok-hyeon was 28 years old with a record of 7-1, and Kim was 0 with a record of 0-0. Seok-hyeon was on a 6-fight winning streak. Kim stopped Seok-hyeon via TKO in the 1st round.

3. 1. Ko Seok-hyeon loses to Sasha Palatnikov via KO

   On March 16, 2018 Ko Seok-hyeon faced Sasha Palatnikov in a welterweight bout. Seok-hyeon was 24 years old with a record of 1-0, and Palatnikov was 29 with a record of 0-1. Seok-hyeon was coming off a win, while Palatnikov was coming off a loss. Palatnikov stopped Seok-hyeon via KO in the 2nd round.