John O'Brien
“The Showstopper”
0-9
Pro W–L
Am 0–1
#32097
Global rank
John O'Brien is an American mixed martial artist with a professional record of 0-9 across 9 bouts. Currently on a 9-fight skid. Last competed July 2025 (active). Has fought most often in United States (8 bouts).
Finish rate
0 %
Wins by
0 KO · 0 SUB · 0 DEC
Current streak
L9
Usually loses by
submission
Fastest loss
0:35 (Rd 1)
vs Michael Smith
Most fights in
United States 8
Last fought
Jul 2025 · Active
Fight locations (2 venues)
Career timeline — fights by year
Wins
Losses
Frequently asked
What is John O'Brien's MMA record?
John O'Brien has a professional MMA record of 0-9.
How does John O'Brien usually lose?
Most of John O'Brien's losses come by submission (5 of 9).
Is John O'Brien still active?
John O'Brien last competed in July 2025, and is considered active (no bout in over two years).
Where is John O'Brien from?
John O'Brien is a American mixed martial artist.
Where does John O'Brien rank in MMA?
John O'Brien sits at #32,097 of 32,631 fighters in the Fight Forensics global MMA rankings.
Pro MMA (9)
L
2025-07-26
FAC 30 - Fighting Alliance Championship 30: O'Brien vs. Montalvo
· Fighting Alliance Championship
R1 3:48
L
2014-04-05
vs
Derek Hyatt
FLP - Fight Lab 36: Misery Loves Company 7
· Fight Lab Promotions
R1 2:23
L
2013-04-26
AOCSC 4 - Art of Combat Sports Championships 4
· Art of Combat Sports Championships (New York)
R1 0:00
Amateur (1)
Amateur bouts — not counted toward the pro record.
L
2013-01-25
AOCSC 3 - Art of Combat Sports Championships 3
· Art of Combat Sports Championships (New York)
R1 1:02