Sean O'Brien

ASSOCIATION
N/A

CLASS
Strawweight

Wins 0

KO / TKO

SUBMISSIONS

DECISIONS

Losses 0

KO / TKO

SUBMISSIONS

DECISIONS

FIGHT HISTORY - AMATEUR

Result	Fighter	Event	Method/Referee	R	Time
loss	Rosen Vasilev	IMMAF - 2023 Youth World Championships: Day 3, Cage 4 Aug / 04 / 2023	Submission (Guillotine Choke)	1	1:46
loss	Bohdan Chornei	IMMAF - 2023 Youth World Championships: Day 3, Cage 4 Aug / 04 / 2023	Decision (Unanimous)	3	2:00

SEAN O'BRIEN RELATED NEWS

This Month’s MMA Birthdays: Reinier de Ridder Celebrates No. 35 “The Dutch Knight” arrived in the Ultimate Fighting Championship with little to no fanfare in 2024 and proceeded to rattle off four...

Aug 30, 2025

This Month’s MMA Birthdays: Johny Hendricks Turns 40 The former Ultimate Fighting Championship welterweight titleholder will celebrate his 40th birthday on Sept. 12.

Sep 05, 2023

By The Numbers: Jon Jones vs. Ciryl Gane The vacant Ultimate Fighting Championship heavyweight title will be up for grabs in the UFC 285 main event on Saturday in Las Vegas.

UFC

Feb 28, 2023

By The Numbers: Andrei Arlovski vs. Jake Collier The heavyweights will lock horns in the UFC on ESPN 35 co-headliner on Saturday in Las Vegas.

UFC

Apr 29, 2022

This Month’s MMA Birthdays: Jessica Andrade Turns 30 Pound-for-pound one of the most violent females in mixed martial arts history, the former Ultimate Fighting Championship women’s strawweight...

Women’s MMA

Sep 08, 2021

Subscribe to our Newsletter