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Kill The Body

and the head will die

Brendan O'Callaghan vs Marquis Williams — record, stats and common opponents compared

SUPER MIDDLEWEIGHT

Brendan O'Callaghan

SUPER MIDDLEWEIGHT

Marquis Williams

Brendan O'Callaghan (2-2-1 across 5 tracked bouts) and Marquis Williams (1-0 across 1 tracked bout) 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.

O'Callaghan

Tracked record

2–2–1

counted from 5 bouts Kill The Body has ingested

Williams

Tracked record

1–0

counted from 1 bout Kill The Body has ingested

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

Williams leads 1–0

Brendan O'Callaghan and Marquis Williams have met 1 time; Williams leads 1–0.

Brendan O'Callaghan and Marquis Williams have met 1 time; Williams leads 1–0.
Met2025Feb 15Series
Brendan O'CallaghanFighter ALLost0–1W–L
Marquis WilliamsFighter BWWon1–0W–L
ResultSD1Meeting

The Numbers

O'Callaghan 2 · Williams 3 of 5 measurable rows
O'CallaghanWilliams
Record†
2-2-11-0 (edge)
Win %0–100%
50%
100% (edge)
Wins by knockoutmax 1
1 (edge)
0
Stoppage rate (tracked wins)‡0–100%
50% (edge)
0%
Times stopped‡max 1
1
0 (edge)
Title reignslevelmax 0
0
0
Bouts per year§not comparable
3—
Bouts trackedcoveragemax 5
5
1

† 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.

How They Win

Tracked bouts only
Brendan O'Callaghan2 wins · from 5 tracked bouts

Brendan O'Callaghan: 2 tracked wins — 1 by KO/TKO (50%) and 1 on the cards (50%). Counted from 5 bouts Kill The Body has ingested.

1 by KO/TKO 50%1 on the cards 50%

Marquis Williams1 win · from 1 tracked bout

Marquis Williams: 1 tracked win — 1 on the cards (100%). Counted from 1 bout Kill The Body has ingested.

1 on the cards 100%

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Brendan O'Callaghan 5, Marquis Williams 1 — 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

Brendan O'Callaghan had won one in a row before losing by stoppage to William Briscoe. O'Callaghan last boxed on Oct 16, 2026 — 8 days ago.LWDWL

Williams Feb 2025Floyd Jun 2025Sosa Dec 2025Brewer Apr 2026Briscoe Oct 20263 tracked bouts per year

Marquis Williams has won once, the most recent against Brendan O'Callaghan. Williams last boxed on Feb 15, 2025 — 616 days ago.W

O'Callaghan Feb 2025

Common Questions

With the rows behind them
Have Brendan O'Callaghan and Marquis Williams ever fought each other?
Yes. Brendan O'Callaghan and Marquis Williams met once on February 15, 2025, and Marquis Williams won by SD.
The meeting

LFeb 15, 2025 · Williams · SD

Head to Head ↓
Who has the better record, O'Callaghan or Williams?
Brendan O'Callaghan is 2-2-1 across the 5 bouts Kill The Body has tracked and Marquis Williams is 1-0 across the 1 bout Kill The Body has tracked. Marquis Williams has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Records · win %

O'Callaghan2–2–150%

Williams1–0100%

The Numbers ↓
Who has more knockouts, O'Callaghan or Williams?
Brendan O'Callaghan has 1 knockout win and Marquis Williams has 0. Brendan O'Callaghan has more.
Knockout wins · KO rate

O'Callaghan1

Williams0

The Numbers ↓
Do O'Callaghan and Williams have any common opponents?
Kill The Body's bout data shows no opponents that both Brendan O'Callaghan and Marquis Williams have faced.
How much fight data does Kill The Body have on O'Callaghan and Williams?
This comparison is drawn from 5 bouts tracked for Brendan O'Callaghan and 1 bout tracked for Marquis Williams. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

O'Callaghan5bouts

Williams1bout

How They Win ↓

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