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USA

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
hometown United States United States
Age
26 (1999-02-03)
Height
5′11″ (180 cm)
Reach -
Weight 170 lbs (77 kg)
Stance -
Gym -
Social media -

Top News

Past Fights
Show Cancelled Fights

USA
Justin Montalvo
(7-3)
i
27 Jul 2025
FAC 30 : O'Brien vs. Montalvo
 Sub (Guillotine Choke) RD1 3:28
USA
Justin Montalvo
(7-3)
i
FAC 30 : O'Brien vs. Montalvo
27 Jul 2025 Sub (Guillotine Choke) RD1 3:28
USA
Ethan Soderstrom
(0-0)
i
13 Oct 2024
FAC 26 : Fight 4 the Cure
 Decision (Unanimous) RD3 5:00
USA
Ethan Soderstrom
(0-0)
i
FAC 26 : Fight 4 the Cure
13 Oct 2024 Decision (Unanimous) RD3 5:00
USA
Johnny Pantoja
(1-2)
i
06 Mar 2021
FAC 7
KO/TKO (Ground and Pound) RD1 2:20
USA
Johnny Pantoja
(1-2)
i
FAC 7
06 Mar 2021 KO/TKO (Ground and Pound) RD1 2:20
USA
Caleb Crump
(2-1)
i
12 Dec 2020
FAC 5
Decision (Unanimous) RD3 5:00
USA
Caleb Crump
(2-1)
i
FAC 5
12 Dec 2020 Decision (Unanimous) RD3 5:00
USA
Daniel Jefferson
(2-1)
i
14 Aug 2020
FAC 3
Decision (Majority) RD3 5:00
USA
Daniel Jefferson
(2-1)
i
FAC 3
14 Aug 2020 Decision (Majority) RD3 5:00
USA
Wayne Collier
(0-4)
i
07 Feb 2020
Utlimate Blue Corner Battles
Sub (Rear Naked Choke) RD1 0:39
USA
Wayne Collier
(0-4)
i
Utlimate Blue Corner Battles
07 Feb 2020 Sub (Rear Naked Choke) RD1 0:39
USA
Cory Heinz
(1-1)
i
07 Dec 2019
KC Fighting Alliance 36
KO/TKO (Punches) RD1 1:10
USA
Cory Heinz
(1-1)
i
KC Fighting Alliance 36
07 Dec 2019 KO/TKO (Punches) RD1 1:10

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.

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