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Kill The Body

and the head will die

Chauncey Fields vs Gary O'Sullivan — record, stats and common opponents compared

Chauncey Fields

🇮🇪IRELAND

Gary O'Sullivan

Chauncey Fields (0-1 across 1 tracked bouts) and Gary O'Sullivan (32-6) are compared on record, finishing method, activity, and common opponents on Kill The Body. The two have met once. They share no common opponents in Kill The Body's bout data.

Fields

Tracked record

0–1

counted from 1 bout Kill The Body has ingested

O'Sullivan

32

Wins21 KO · 66%

6

Losses

0

Draws38 tracked bouts

Heads up: at least one of these records is a tracked record — the wins and losses Kill The Body has ingested so far, not an independently verified career total. Treat the comparison as a read on the bouts we hold, not a settled ledger.

Head to Head

O'Sullivan leads 1–0

Chauncey Fields and Gary O'Sullivan have met 1 time; O'Sullivan leads 1–0.

Chauncey Fields and Gary O'Sullivan have met 1 time; O'Sullivan leads 1–0.
Met2017May 13Series
Chauncey FieldsFighter ALLost0–1W–L
Gary O'SullivanFighter BWWon1–0W–L
ResultKOR21Meeting

The Numbers

Fields 1 · O'Sullivan 3 of 4 measurable rows
FieldsO'Sullivan
Record†
0-132-6 (edge)
Win %0–100%
0%
84.2% (edge)
Wins by knockoutmax 21
0
21 (edge)
KO ratenot comparable
—65.63%
Stoppage rate (tracked wins)‡not comparable
—66%
Times stopped‡max 4
1 (edge)
4
Title reignslevelmax 0
0
0
Bouts per year§not comparable
—2.1
Bouts trackedcoveragemax 38
1
38

† One or both records are tracked, not career-verified. · ‡ Counted from bouts Kill The Body has ingested, not a career total. · § Across each fighter's tracked career span. · Bars are scaled per row — percentages on 0–100, counts against the larger of the two. Every figure is also printed as text.

Tale of the Tape

Heightnot held
Chauncey Fields: No height on file
Gary O'Sullivan: 5′10″
Reachnot held
Chauncey Fields: No reach on file
Gary O'Sullivan: 70″
Agenot held
Chauncey Fields: No date of birth
Gary O'Sullivan: 42
Stance
Chauncey Fields: Not recorded
Gary O'Sullivan: Orthodox

Chauncey Fields left, Gary O'Sullivan right, as everywhere on this page. Age is stated, not scored — neither age nor stance carries an edge.

How They Win

Tracked bouts only
Chauncey Fields0 wins · from 1 tracked bout

Chauncey Fields: no tracked wins in the 1 bout Kill The Body has ingested.

No tracked wins for Fields yet.

Gary O'Sullivan32 wins · from 38 tracked bouts

Gary O'Sullivan: 32 tracked wins — 21 by KO/TKO (66%), 10 on the cards (31%) and 1 by another method or unrecorded (3%). Counted from 38 bouts Kill The Body has ingested.

21 by KO/TKO 66%10 on the cards 31%1 by another method or unrecorded 3%

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Chauncey Fields 1, Gary O'Sullivan 38 — not from a career-complete method table.

Common Opponents

No opponents in common across the bouts Kill The Body has tracked for these two.

Current Form

Oldest left · newest right

Chauncey Fields last boxed on May 13, 2017 — 3,445 days ago. Fields had lost the most recent, to Gary O'Sullivan.L

O'Sullivan May 2017

Gary O'Sullivan has won once since losses to Erislandy Lara and Sofiane Khati. O'Sullivan last boxed on Oct 10, 2025 — 373 days ago.LWLLW

Munguia Jan 2020Robakidze May 2021Lara May 2022Khati Mar 2024Pawlowski Oct 20252.1 tracked bouts per year

Common Questions

With the rows behind them
Have Chauncey Fields and Gary O'Sullivan ever fought each other?
Yes. Chauncey Fields and Gary O'Sullivan met once on May 13, 2017, and Gary O'Sullivan won by KO in round 2.
The meeting

LMay 13, 2017 · O'Sullivan · KO R2

Head to Head ↓
Who has the better record, Fields or O'Sullivan?
Chauncey Fields is 0-1 across the 1 bouts Kill The Body has tracked and Gary O'Sullivan is 32-6. Gary O'Sullivan has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Records · win %

Fields0–10%

O'Sullivan32–684.2%

The Numbers ↓
Who has more knockouts, Fields or O'Sullivan?
Chauncey Fields has 0 knockout wins and Gary O'Sullivan has 21. Gary O'Sullivan has more.
Knockout wins · KO rate

Fields0

O'Sullivan2165.6%

The Numbers ↓
Do Fields and O'Sullivan have any common opponents?
Kill The Body's bout data shows no opponents that both Chauncey Fields and Gary O'Sullivan have faced.
How much fight data does Kill The Body have on Fields and O'Sullivan?
This comparison is drawn from 1 bout tracked for Chauncey Fields and 38 bouts tracked for Gary O'Sullivan. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Fields1bout

O'Sullivan38bouts

How They Win ↓

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