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Kill The Body

and the head will die

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

Morris Harris

🇺🇸HEAVYWEIGHT

Philadelphia Jack O'Brien

Morris Harris (2-9-1 across 12 tracked bouts) 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 2 common opponents.

Harris

Tracked record

2–9–1

counted from 12 bouts 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

O'Brien leads 1–0

Morris Harris and Philadelphia Jack O'Brien have met 1 time; O'Brien leads 1–0.

Morris Harris and Philadelphia Jack O'Brien have met 1 time; O'Brien leads 1–0.
Met1904Dec 19Series
Morris HarrisFighter ALLost0–1W–L
Philadelphia Jack O'BrienFighter BWWon1–0W–L
ResultNWS1Meeting

The Numbers

Harris 0 · O'Brien 6 of 6 measurable rows
HarrisO'Brien
Record†
2-9-1147-16-24 (edge)
Win %0–100%
20.8%
85% (edge)
Wins by knockoutmax 55
0
55 (edge)
KO ratenot comparable
—37.41%
Stoppage rate (tracked wins)‡0–100%
0%
37% (edge)
Times stopped‡max 4
4
3 (edge)
Title reignslevelmax 0
0
0
Bouts per year§max 12.8
1.7
12.8 (edge)
Bouts trackedcoveragemax 188
12
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
Morris Harris: No date of birth
Philadelphia Jack O'Brien: Died aged 64
Stance
Morris Harris: Not recorded
Philadelphia Jack O'Brien: Orthodox

Morris Harris 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
Morris Harris2 wins · from 12 tracked bouts

Morris Harris: 2 tracked wins — 2 by another method or unrecorded (100%). Counted from 12 bouts Kill The Body has ingested.

2 by another method or unrecorded 100%

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 — Morris Harris 12, Philadelphia Jack O'Brien 188 — not from a career-complete method table.

Common Opponents

2 shared

2 shared · O'Brien better on 2

Harris

Opponent

O'Brien

  • Morris Harris

    0–2 against

    Loss, KO 2

    1910

    Loss, TKO 7

    1909

    LangfordO'Brien better

    Philadelphia Jack O'Brien

    Loss, TKO 5

    1911

  • Morris Harris

    Loss, KO 1

    1905

    JohnsonO'Brien better

    Philadelphia Jack O'Brien

    Draw, NWS

    1909

Both sides are set at the same size on purpose. Kill The Body does not score a second-round knockout above a split decision — the edge counts losses first and wins as the tiebreak, and the rest is yours to argue. Shared opponents are matched on fighter identity, not on name, so two different fighters with the same name never merge into one row.

Current Form

Oldest left · newest right

Morris Harris last boxed on Feb 19, 1912 — 41,885 days ago. Harris had lost three straight.LDLLL

Johnson May 1910Jeanette Jul 1910Jeanette Sep 1910Langford Dec 1910Jeanette Feb 19121.7 tracked bouts per year

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 Morris Harris and Philadelphia Jack O'Brien ever fought each other?
Yes. Morris Harris and Philadelphia Jack O'Brien met once on December 19, 1904, and Philadelphia Jack O'Brien won by NWS.
The meeting

LDec 19, 1904 · O'Brien · NWS

Head to Head ↓
Who has the better record, Harris or O'Brien?
Morris Harris is 2-9-1 across the 12 bouts 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 %

Harris2–9–120.8%

O'Brien147–16–2485%

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

Harris0

O'Brien5537.4%

The Numbers ↓
Do Harris and O'Brien have any common opponents?
Morris Harris and Philadelphia Jack O'Brien share 2 common opponents: Sam Langford and Jack Johnson. Philadelphia Jack O'Brien fared better against 2 of them.
2 shared opponents

Sam LangfordLL

Jack JohnsonLD

Common Opponents ↓
How much fight data does Kill The Body have on Harris and O'Brien?
This comparison is drawn from 12 bouts tracked for Morris Harris and 188 bouts tracked for Philadelphia Jack O'Brien. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Harris12bouts

O'Brien188bouts

How They Win ↓

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