What is John O'Brien's professional MMA record?

John O'Brien holds a professional MMA record of 0-4-0 (wins–losses–draws).

What weight class does John O'Brien compete in?

John O'Brien competes in the Featherweight division.

John O'Brien competes out of United States.

Fighters/Featherweight/O'Brien

FeatherweightMMA

"The Showstopper"

United StatesModern Self-Defense Center

Wins

Losses

Draws

Finish Rate

KO / TKO

Submissions

2014

Pro Debut

KO / TKO0

Decision0

Submission0

0 of 1
wins by finish

Last 4

Result	Opponent	Method	Rd	Event	Date
Loss	Justin Montalvo H2H	Submission (Guillotine Choke)	R1	FAC 30 - Fighting Alliance Championship 30: O'Brien vs. Montalvo	Jul 26, 2025
Loss	Brandon Polcare H2H	Submission (Arm-Triangle Choke)	R1	Reality Fighting - Mohegan Sun	Jan 3, 2015
Loss	Derek Hyatt H2H	TKO (Punches)	R1	FLP - Fight Lab 36: Misery Loves Company 7	Apr 5, 2014
Loss	Johnny Lopez H2H	Technical Submission (Guillotine Choke)	R1	Reality Fighting - New Year's Bash 2	Jan 4, 2014

Data sourced from public records for archival/research purposes.