What is Roman Guillen's professional MMA record?

Roman Guillen holds a professional MMA record of 1-1-0 (wins–losses–draws).

What weight class does Roman Guillen compete in?

Roman Guillen competes in the Welterweight division.

Roman Guillen has won 1 fight by KO/TKO.

Roman Guillen competes out of United States.

Fighters/Welterweight/Guillen

WelterweightMMA

Wins

Losses

Draws

100%

Finish Rate

KO / TKO

Submissions

2025

Pro Debut

KO / TKO1

Decision0

Submission0

100%

1 of 1
wins by finish

Last 2

Result	Opponent	Method	Rd	Event	Date
Win	Isaac Martinez H2H	KO (Punches)	R1	559 Fights 122 - 559 Fights	Mar 8, 2026
Loss	Steven O'Bryant H2H	Submission (Arm-Triangle Choke)	R1	Urijah Faber's A1 Combat 28 - Vogels vs. Collins	Jun 20, 2025

Data sourced from public records for archival/research purposes.