Lee Yi-sak è un lottatore di MMA della categoria pesi medi. Il suo record nelle arti marziali miste è 8–2 (vittorie–sconfitte–pareggi). Scheda: 26 anni.
| Esito | Avversario | Metodo | Evento | Data |
|---|---|---|---|---|
| Loss | Luis Felipe Dias | TKO | UFC Fight Night: Song vs. Figueiredo | May 30, 2026 |
| Win | Daichi Mikami | Submission (Rear Naked Choke) | HEAT 57 | September 20, 2025 |
| Win | Weichao Nie | Submission (Von Flue Choke) | Longsan Fight: China Cup MMA Tour | July 26, 2025 |
| Loss | Agilan Thani | Submission (Rear Naked Choke) | Breakthrough Combat 2 | December 25, 2024 |
| Win | Apaer Aerdake | TKO | WKG & M-1 Global: MMA Fight in Turpan | May 11, 2024 |
| Win | Shota Fujii | TKO | Gladiator 023 | September 29, 2023 |
| Win | Danier Nuerboli | Decision (unanimous) | WLF MMA 67: Day 2 | August 20, 2023 |
| Win | Jae Gyu Lee | Technical Submission (Rear-Naked Choke) | Double G FC 13 | August 27, 2022 |
| Win | Kyung Min Cho | TKO | TFC 20: To the Origin | November 19, 2021 |
| Win | Hyo Sung Eun | TKO | TFC Dream 7 | July 17, 2021 |
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