Fighter

John O'Brien

5-2-0

United StatesLast 5

Amateur MMA 5-2Kickboxing 1-0

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John O'Brien holds a professional MMA record of 5-2-0. John O'Brien has won 5 fights: 2 by KO/TKO, 1 by submission, 2 by decision. Of 2 career losses, 0 came by KO/TKO and 1 by submission. John O'Brien also has 1 recorded Kickboxing bout.

Profile

Height: 5'11"180 cm
DOB: 1999-02-03
Age: 27
Nationality: United States
Birthplace: United States

Career history

LOSS
vs Justin Montalvo
FAC 30: O'Brien vs. Montalvo· Jul 26, 2025· Welterweight· 5-2 vs 8-3
SUB
R1 · 3:28
WIN
vs Ethan Soderstrom
FAC 26: Fight 4 the Cure· Oct 12, 2024· Welterweight· 5-1 vs 0-1
UD
WIN
vs Johnny Pantoja
FAC 7· Mar 5, 2021· Welterweight· 4-1 vs 1-3
TKO
R1 · 2:20
LOSS
vs Caleb Crump
FAC 5· Dec 11, 2020· Lightweight· 3-1 vs 3-1
UD
WIN
vs Daniel Jefferson
FAC 3· Aug 14, 2020· Lightweight· 3-0 vs 2-2
MD
WIN
vs Wayne Collier
Utlimate Blue Corner Battles· Feb 7, 2020· Welterweight· 2-0 vs 0-5
SUB
R1 · 0:39
WIN
vs Cory Heinz
KC Fighting Alliance 36· Dec 7, 2019· Welterweight· 1-0 vs 1-2
TKO
R1 · 1:10

UFCalendar Power Index rating

Current: 1548▼21
Peak: 1592Aug 14, 2020
Rated fights: 7

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Frequently asked questions

When does John O'Brien fight next?

John O'Brien has no confirmed upcoming fight.

What is John O'Brien's record?

John O'Brien's professional MMA record is 5-2-0.

Who is John O'Brien fighting next?

John O'Brien's next opponent has not been announced.

How many knockouts does John O'Brien have?

John O'Brien has 2 wins by KO/TKO and 1 win by submission.

How tall is John O'Brien?

John O'Brien is 5'11" (180 cm) tall.

How old is John O'Brien?

John O'Brien is 27 years old (born Feb 3, 1999).

Where is John O'Brien from?

John O'Brien is from United States.

CAREER SUMMARY