Standout achievements
Roman Guillen is an American mixed martial artist with a professional record of 6-5 across 11 bouts. They've won 5 by KO/TKO, 0 by submission and 1 by decision — a 83 % finish rate. Most wins come by KO/TKO. Last competed March 2026 (active). Has fought most often in United States (11 bouts).
Fight locations (3 venues)
Career timeline — fights by year
Frequently asked
What is Roman Guillen's MMA record?
Roman Guillen has a professional MMA record of 6-5 — 5 wins by KO/TKO, 0 by submission, 1 by decision.
How does Roman Guillen usually win?
They most often win by KO/TKO (5 of 6 wins).
How does Roman Guillen usually lose?
Most of Roman Guillen's losses come by decision (3 of 5).
Is Roman Guillen still active?
Roman Guillen last competed in March 2026, and is considered active (no bout in over two years).
What is Roman Guillen's fastest finish?
KO/TKO of Krikor Balkian in 0:23 (Rd 1) at 559 Fights 107 - 559 Fights.
Where is Roman Guillen from?
Roman Guillen is a American mixed martial artist.
What is Roman Guillen's longest MMA win streak?
Roman Guillen's longest winning run on record is 2 straight victories.
Where does Roman Guillen rank in MMA?
Roman Guillen sits at #16,993 of 32,631 fighters in the Fight Forensics global MMA rankings.
Pro MMA (11)
Amateur (1)
Amateur bouts — not counted toward the pro record.