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Kill The Body

and the head will die

Brendan O'Callaghan vs John Brewer — record, stats and common opponents compared

SUPER MIDDLEWEIGHT

Brendan O'Callaghan

SUPER MIDDLEWEIGHT

John Brewer

Brendan O'Callaghan (2-1-1 across 4 tracked bouts) and John Brewer (0-4 across 4 tracked bouts) 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

2–1–1

counted from 4 bouts Kill The Body has ingested

Brewer

Tracked record

0–4

counted from 4 bouts 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

O'Callaghan leads 1–0

Brendan O'Callaghan and John Brewer have met 1 time; O'Callaghan leads 1–0.

Brendan O'Callaghan and John Brewer have met 1 time; O'Callaghan leads 1–0.
Met2026Apr 11Series
Brendan O'CallaghanFighter AWWon1–0W–L
John BrewerFighter BLLost0–1W–L
ResultTKOR21Meeting

The Numbers

O'Callaghan 4 · Brewer 1 of 5 measurable rows
O'CallaghanBrewer
Record†
2-1-1 (edge)0-4
Win %0–100%
62.5% (edge)
0%
Wins by knockoutmax 1
1 (edge)
0
Stoppage rate (tracked wins)‡not comparable
50%—
Times stopped‡max 2
0 (edge)
2
Title reignslevelmax 0
0
0
Bouts per year§max 3.9
3.5
3.9 (edge)
Bouts trackedlevelmax 4
4
4

† 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 4 tracked bouts

Brendan O'Callaghan: 2 tracked wins — 1 by KO/TKO (50%) and 1 on the cards (50%). Counted from 4 bouts Kill The Body has ingested.

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

John Brewer0 wins · from 4 tracked bouts

John Brewer: no tracked wins in the 4 bouts Kill The Body has ingested.

No tracked wins for Brewer yet.

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Brendan O'Callaghan 4, John Brewer 4 — 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 has won once since a draw with George Sosa. O'Callaghan last boxed on Apr 11, 2026 — 190 days ago.LWDW

Williams Feb 2025Floyd Jun 2025Sosa Dec 2025Brewer Apr 20263.5 tracked bouts per year

John Brewer has lost four straight. Brewer last boxed on Jul 25, 2026 — 85 days ago.LLLL

Parker Jul 2025Cantolina Nov 2025O'Callaghan Apr 2026Briscoe Jul 20263.9 tracked bouts per year

Common Questions

With the rows behind them
Have Brendan O'Callaghan and John Brewer ever fought each other?
Yes. Brendan O'Callaghan and John Brewer met once on April 11, 2026, and Brendan O'Callaghan won by TKO in round 2.
The meeting

WApr 11, 2026 · O'Callaghan · TKO R2

Head to Head ↓
Who has the better record, O'Callaghan or Brewer?
Brendan O'Callaghan is 2-1-1 across the 4 bouts Kill The Body has tracked and John Brewer is 0-4 across the 4 bouts Kill The Body has tracked. Brendan O'Callaghan has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Records · win %

O'Callaghan2–1–162.5%

Brewer0–40%

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

O'Callaghan1

Brewer0

The Numbers ↓
Do O'Callaghan and Brewer have any common opponents?
Kill The Body's bout data shows no opponents that both Brendan O'Callaghan and John Brewer have faced.
How much fight data does Kill The Body have on O'Callaghan and Brewer?
This comparison is drawn from 4 bouts tracked for Brendan O'Callaghan and 4 bouts tracked for John Brewer. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

O'Callaghan4bouts

Brewer4bouts

How They Win ↓

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