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Kill The Body

and the head will die

Jai Opetaia vs Peter Brennan — record, stats and common opponents compared

🇦🇺CRUISERWEIGHT

Jai Opetaia

Peter Brennan

Jai Opetaia (31-0) and Peter Brennan (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.

Opetaia

31

Wins24 KO · 77%

0

Losses

0

Draws31 tracked bouts

Brennan

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

Opetaia leads 1–0

Jai Opetaia and Peter Brennan have met 1 time; Opetaia leads 1–0.

Jai Opetaia and Peter Brennan have met 1 time; Opetaia leads 1–0.
Met2016Dec 9Series
Jai OpetaiaFighter AWWon1–0W–L
Peter BrennanFighter BLLost0–1W–L
ResultKOR11Meeting

The Numbers

Opetaia 6 · Brennan 0 of 6 measurable rows
OpetaiaBrennan
Record†
31-0 (edge)0-4
Win %0–100%
100% (edge)
0%
Wins by knockoutmax 24
24 (edge)
0
KO ratenot comparable
77.42%—
Stoppage rate (tracked wins)‡not comparable
77%—
Times stopped‡max 3
0 (edge)
3
Title reignsmax 3
3 (edge)
0
Bouts per year§max 2.8
2.8 (edge)
0.3
Bouts trackedcoveragemax 31
31
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.

Tale of the Tape

Heightnot held
Jai Opetaia: 6′2″
Peter Brennan: No height on file
Reachnot held
Jai Opetaia: 76″
Peter Brennan: No reach on file
Agenot held
Jai Opetaia: 31
Peter Brennan: No date of birth
Stance
Jai Opetaia: Southpaw
Peter Brennan: Not recorded

Jai Opetaia left, Peter Brennan right, as everywhere on this page. Age is stated, not scored — neither age nor stance carries an edge.

How They Win

Tracked bouts only
Jai Opetaia31 wins · from 31 tracked bouts

Jai Opetaia: 31 tracked wins — 24 by KO/TKO (77%) and 7 on the cards (23%). Counted from 31 bouts Kill The Body has ingested.

24 by KO/TKO 77%7 on the cards 23%

Peter Brennan0 wins · from 4 tracked bouts

Peter Brennan: no tracked wins in the 4 bouts Kill The Body has ingested.

No tracked wins for Brennan yet.

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Jai Opetaia 31, Peter Brennan 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

Jai Opetaia has won 31 straight, the most recent against Noel Mikaelian. Opetaia last boxed on Sep 12, 2026 — 42 days ago.WWWWW

Nyika Jan 2025Squeo Jun 2025Cinkara Dec 2025Glanton Mar 2026Mikaelian Sep 20262.8 tracked bouts per year

Peter Brennan last boxed on Dec 9, 2016 — 3,607 days ago. Brennan had lost four straight.LLLL

Pittman Mar 2005Pittman Sep 2005McCracken Feb 2014Opetaia Dec 20160.3 tracked bouts per year

Common Questions

With the rows behind them
Have Jai Opetaia and Peter Brennan ever fought each other?
Yes. Jai Opetaia and Peter Brennan met once on December 9, 2016, and Jai Opetaia won by KO in round 1.
The meeting

WDec 9, 2016 · Opetaia · KO R1

Head to Head ↓
Who has the better record, Opetaia or Brennan?
Jai Opetaia is 31-0 and Peter Brennan is 0-4 across the 4 bouts Kill The Body has tracked. Jai Opetaia has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Records · win %

Opetaia31–0100%

Brennan0–40%

The Numbers ↓
Who has more knockouts, Opetaia or Brennan?
Jai Opetaia has 24 knockout wins and Peter Brennan has 0. Jai Opetaia has more.
Knockout wins · KO rate

Opetaia2477.4%

Brennan0

The Numbers ↓
Do Opetaia and Brennan have any common opponents?
Kill The Body's bout data shows no opponents that both Jai Opetaia and Peter Brennan have faced.
How much fight data does Kill The Body have on Opetaia and Brennan?
This comparison is drawn from 31 bouts tracked for Jai Opetaia and 4 bouts tracked for Peter Brennan. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Opetaia31bouts

Brennan4bouts

How They Win ↓

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