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USA

John O'Brien

5-2

Welterweight
John O'Brien

Wins

5

2 KO/TKO - 29%
1 submission - 14%
2 decision - 29%

2

Losses

0% - 0 KO/TKO
14% - 1 submission
14% - 1 decision
hometownUnited States
Age
27(1999-02-03)
Height
5′11″ (180 cm)
Reach-
Weight170 lbs (77 kg)
Stance-
Gym-
Social media-

Top News

Past Fights
Show Cancelled Fights

USA
Justin Montalvo
(7-3)
i
FAC 30: O'Brien vs. Montalvo
27 Jul2025Sub(Guillotine Choke) RD13:28
USA
Ethan Soderstrom
(0-0)
i
FAC 26: Fight 4 the Cure
13 Oct2024Decision(Unanimous) RD35:00
USA
Johnny Pantoja
(1-2)
i
FAC 7
06 Mar2021KO/TKO(Ground and Pound) RD12:20
USA
Caleb Crump
(2-1)
i
FAC 5
12 Dec2020Decision(Unanimous) RD35:00
USA
Daniel Jefferson
(2-1)
i
FAC 3
14 Aug2020Decision(Majority) RD35:00
USA
Wayne Collier
(0-4)
i
Utlimate Blue Corner Battles
07 Feb2020Sub(Rear Naked Choke) RD10:39
USA
Cory Heinz
(1-1)
i
KC Fighting Alliance 36
07 Dec2019KO/TKO(Punches) RD11:10

Frequently Asked Questions About John O'Brien

  • How much does MMA star John O'Brien weigh?

    Weighing in at approximately 170 pounds, John O'Brien's weight aligns with his competitive category in the fighting world.

John O'Brien Videos