Roman Guillen

United States
United States
Weight categories: Welterweight

Record: Roman Guillen

Wins Losses Draws
1 1 0
KOs
1
Submissions
1

Biography: Roman Guillen

MMA fighter Roman Guillen represents the country: United States. He began professional career in 2025 and currently has 2 fights, of which he won 1 and lost 1. He participated in tournaments of such promotions as: Urijah Faber's A1 Combat, 559 Fights. His opponents were such fighters as: Isaac Martinez, Steven O'Bryant.

Rating Roman Guillen

Not in rating
The fighter is included in the rating after 5 fights.

Last news Roman Guillen Full list

Fastest MMA Tournament wins in the world last week

  1. Oliver Schmid on SFS 23 Shuriken Fight Series 23 Round:1 Time:0:15
  2. Szymon Janz on Extra Gale Sportow Walki Koszalin Round:1 Time:0:16
  3. Aoi Kuriyama on Osaka Impact 2026 2nd Round None Round:1 Time:0:27
  4. Roman Guillen on 559 Fights 122 559 Fights Round:1 Time:0:28
  5. Lucas De Souza Silva on HTF - Hope Team Fight - 1 None Round:1 Time:0:33
  6. Mathilde Aschenbrenner on HXMMA 41 Hexagone MMA 41 Round:1 Time:0:34

Fights statistics: Roman Guillen

Result Opponent Event Date Method Round Time
Win United States Isaac Martinez 559 Fights 122
559 Fights 		2026-03-08 KO
(Punch) 		1 0:28
Loss United States Steven O'Bryant Urijah Faber's A1 Combat 28
Chumash Casino Resort 		2025-06-20 Submission
(Arm triangle) 		1 3:22

Submission loss statistics Roman Guillen

Submission Count
Arm triangle 1

Promotion statistics Roman Guillen

Promotion Fights count Wins count Losses count
559 Fights 1 1
KO: 1 		0
Urijah Faber's A1 Combat 1 0 1
Submission: 1

Predictions

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