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Jack Collier vs Philadelphia Jack O'Brien — record, stats and common opponents compared

Jack Collier

🇺🇸HEAVYWEIGHT

Philadelphia Jack O'Brien

Jack Collier (0-0-1 across 1 tracked bout) and Philadelphia Jack O'Brien (147-16-24) 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.

Collier

Tracked record

0–0–1

counted from 1 bout Kill The Body has ingested

O'Brien

147

Wins55 KO · 37%

16

Losses

24

Draws188 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

Series level 0–0 with 1 draw

Jack Collier and Philadelphia Jack O'Brien have met 1 time; Series level 0–0 with 1 draw.

Jack Collier and Philadelphia Jack O'Brien have met 1 time; Series level 0–0 with 1 draw.
Met1899Jan 28Series
Jack CollierFighter ADDraw0–0–1W–L–D
Philadelphia Jack O'BrienFighter BDDraw0–0–1W–L–D
ResultNWS1Meeting

The Numbers

Collier 1 · O'Brien 3 of 4 measurable rows
CollierO'Brien
Record†
0-0-1147-16-24 (edge)
Win %0–100%
50%
85% (edge)
Wins by knockoutmax 55
0
55 (edge)
KO ratenot comparable
—37.41%
Stoppage rate (tracked wins)‡not comparable
—37%
Times stopped‡max 3
0 (edge)
3
Title reignslevelmax 0
0
0
Bouts per year§not comparable
—12.8
Bouts trackedcoveragemax 188
1
188

† 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

Agenot held
Jack Collier: No date of birth
Philadelphia Jack O'Brien: Died aged 64
Stance
Jack Collier: Not recorded
Philadelphia Jack O'Brien: Orthodox

Jack Collier left, Philadelphia Jack O'Brien right, as everywhere on this page. Age is stated, not scored — neither age nor stance carries an edge.

How They Win

Tracked bouts only
Jack Collier0 wins · from 1 tracked bout

Jack Collier: no tracked wins in the 1 bout Kill The Body has ingested.

No tracked wins for Collier yet.

Philadelphia Jack O'Brien147 wins · from 188 tracked bouts

Philadelphia Jack O'Brien: 147 tracked wins — 55 by KO/TKO (37%), 29 on the cards (20%) and 63 by another method or unrecorded (43%). Counted from 188 bouts Kill The Body has ingested.

55 by KO/TKO 37%29 on the cards 20%63 by another method or unrecorded 43%

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Jack Collier 1, Philadelphia Jack O'Brien 188 — 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

Jack Collier last boxed on Jan 28, 1899 — 46,658 days ago. Collier had drawn the most recent tracked bout with Philadelphia Jack O'Brien.D

O'Brien Jan 1899

Philadelphia Jack O'Brien has lost three straight, after one straight win. O'Brien last boxed on Aug 15, 1911.LWLLL

Kaufman Apr 1910Schreck May 1910Koch Jun 1910Ramsey Nov 1910Langford Aug 191112.8 tracked bouts per year

Common Questions

With the rows behind them
Have Jack Collier and Philadelphia Jack O'Brien ever fought each other?
Yes. Jack Collier and Philadelphia Jack O'Brien met once on January 28, 1899, and the bout was a draw by NWS.
The meeting

DJan 28, 1899 · Draw · NWS

Head to Head ↓
Who has the better record, Collier or O'Brien?
Jack Collier is 0-0-1 across the 1 bout Kill The Body has tracked and Philadelphia Jack O'Brien is 147-16-24. Philadelphia Jack O'Brien has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Records · win %

Collier0–0–150%

O'Brien147–16–2485%

The Numbers ↓
Who has more knockouts, Collier or O'Brien?
Jack Collier has 0 knockout wins and Philadelphia Jack O'Brien has 55. Philadelphia Jack O'Brien has more.
Knockout wins · KO rate

Collier0

O'Brien5537.4%

The Numbers ↓
Do Collier and O'Brien have any common opponents?
Kill The Body's bout data shows no opponents that both Jack Collier and Philadelphia Jack O'Brien have faced.
How much fight data does Kill The Body have on Collier and O'Brien?
This comparison is drawn from 1 bout tracked for Jack Collier and 188 bouts tracked for Philadelphia Jack O'Brien. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Collier1bout

O'Brien188bouts

How They Win ↓

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