Seong Ug Yoon is a South Korean mixed martial artist with a professional record of 3-5-1 across 9 bouts. They've won 2 by KO/TKO, 0 by submission and 1 by decision — a 67 % finish rate. Most wins come by KO/TKO. Currently on a 2-fight skid. Last competed June 2026 (active). Has fought most often in South Korea (9 bouts).
Fight locations (2 venues)
Career timeline — fights by year
Frequently asked
What is Seong Ug Yoon's MMA record?
Seong Ug Yoon has a professional MMA record of 3-5-1 — 2 wins by KO/TKO, 0 by submission, 1 by decision.
How does Seong Ug Yoon usually win?
They most often win by KO/TKO (2 of 3 wins).
How does Seong Ug Yoon usually lose?
Most of Seong Ug Yoon's losses come by KO/TKO (3 of 5).
Is Seong Ug Yoon still active?
Seong Ug Yoon last competed in June 2026, and is considered active (no bout in over two years).
What is Seong Ug Yoon's fastest finish?
KO/TKO of Seok Ho Seon in 3:47 (Rd 1) at Black Combat - Champions League 22-23 Season: 1st Week.
Where is Seong Ug Yoon from?
Seong Ug Yoon is a South Korean mixed martial artist.
What is Seong Ug Yoon's longest MMA win streak?
Seong Ug Yoon's longest winning run on record is 2 straight victories.
Where does Seong Ug Yoon rank in MMA?
Seong Ug Yoon sits at #27,216 of 32,631 fighters in the Fight Forensics global MMA rankings.