Mark O'Neil

AGE	N/A / N/A
HEIGHT	0'0" / 0 cm
WEIGHT	265 lbs / 120.2 kg

ASSOCIATION
N/A

CLASS
Heavyweight

Wins 0

KO / TKO

SUBMISSIONS

DECISIONS

Losses 1

KO / TKO

SUBMISSIONS

100%

DECISIONS

FIGHT HISTORY - PRO

Result	Fighter	Event	Method/Referee	R	Time
loss	Hadrian Howard	Retribution FC - Fight Night Round 4: Redemption Feb / 19 / 2022	Submission (Armbar)	1	0:00

MARK O'NEIL RELATED NEWS

UFC Perth ‘Ulberg vs. Reyes’ Play-by-Play, Results & Round Scoring Sherdog's live UFC Perth coverage will begin Saturday at 7 p.m. ET. The event is also known as UFC Fight Night 260.

UFC

Jay Pettry

Sep 27, 2025

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...

Brian Knapp

Aug 30, 2025

Sherdog’s Official Mixed Martial Arts Rankings If finishing Jiri Prochazka once wasn’t enough, accomplishing the feat a second time made it crystal clear: Alex Pereira is the undisputed...

UFC

Tristen Critchfield

Jul 01, 2024

5 Defining Moments: Ariane Lipski The former KSW champ will stake her three-fight win streak against Karine Silva this Saturday on the main card of UFC on ESPN 55.

UFC

Abhishek Nambiar

Apr 22, 2024

By the Numbers: UFC 299 All that was missing for Sean O'Malley was a finish.

UFC

Tristen Critchfield

Mar 10, 2024

Mark O'Neil

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