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Kill The Body

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

Jim Jeffords

🇺🇸HEAVYWEIGHT

Philadelphia Jack O'Brien

Jim Jeffords (2-14 across 16 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 5 times. They share 1 common opponent.

Jeffords

Tracked record

2–14

counted from 16 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 5–0

Jim Jeffords and Philadelphia Jack O'Brien have met 5 times; O'Brien leads 5–0.

Jim Jeffords and Philadelphia Jack O'Brien have met 5 times; O'Brien leads 5–0.
Met1902Oct 231903Mar 91903Jul 111903Dec 241904Oct 21Series
Jim JeffordsFighter ALLostLLostLLostLLostLLost0–5W–L
Philadelphia Jack O'BrienFighter BWWonWWonWWonWWonWWon5–0W–L
ResultNWSPTSNWSNWSKOR35Meetings

The Numbers

Jeffords 1 · O'Brien 5 of 6 measurable rows
JeffordsO'Brien
Record†
2-14147-16-24 (edge)
Win %0–100%
12.5%
85% (edge)
Wins by knockoutmax 55
1
55 (edge)
KO ratenot comparable
—37.41%
Stoppage rate (tracked wins)‡0–100%
50% (edge)
37%
Times stopped‡max 7
7
3 (edge)
Title reignslevelmax 0
0
0
Bouts per year§max 12.8
1.9
12.8 (edge)
Bouts trackedcoveragemax 188
16
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
Jim Jeffords: No date of birth
Philadelphia Jack O'Brien: Died aged 64
Stance
Jim Jeffords: Not recorded
Philadelphia Jack O'Brien: Orthodox

Jim Jeffords 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
Jim Jeffords2 wins · from 16 tracked bouts

Jim Jeffords: 2 tracked wins — 1 by KO/TKO (50%) and 1 by another method or unrecorded (50%). Counted from 16 bouts Kill The Body has ingested.

1 by KO/TKO 50%1 by another method or unrecorded 50%

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 — Jim Jeffords 16, Philadelphia Jack O'Brien 188 — not from a career-complete method table.

Common Opponents

1 shared

1 shared · O'Brien better on 1

Jeffords

Opponent

O'Brien

  • Jim Jeffords

    0–2 against

    Loss, NWS

    1906

    Loss, KO 4

    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

Jim Jeffords last boxed on Jan 27, 1908 — 43,369 days ago. Jeffords had lost 12 straight.LLLLL

Jeanette Oct 1905Gardiner Jan 1906Johnson Nov 1906Jeanette Feb 1907Jeanette Jan 19081.9 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 Jim Jeffords and Philadelphia Jack O'Brien ever fought each other?
Yes. Jim Jeffords and Philadelphia Jack O'Brien have met 5 times and Philadelphia Jack O'Brien leads the series 5-0.
The 5 meetings

LOct 21, 1904 · O'Brien · KO R3

LDec 24, 1903 · O'Brien · NWS

LJul 11, 1903 · O'Brien · NWS

LMar 9, 1903 · O'Brien · PTS

Head to Head ↓
Who has the better record, Jeffords or O'Brien?
Jim Jeffords is 2-14 across the 16 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 %

Jeffords2–1412.5%

O'Brien147–16–2485%

The Numbers ↓
Who has more knockouts, Jeffords or O'Brien?
Jim Jeffords has 1 knockout win and Philadelphia Jack O'Brien has 55. Philadelphia Jack O'Brien has more.
Knockout wins · KO rate

Jeffords1

O'Brien5537.4%

The Numbers ↓
Do Jeffords and O'Brien have any common opponents?
Jim Jeffords and Philadelphia Jack O'Brien share 1 common opponent: Jack Johnson. Philadelphia Jack O'Brien fared better against 1 of them.
Shared opponent

Jack JohnsonLD

Common Opponents ↓
How much fight data does Kill The Body have on Jeffords and O'Brien?
This comparison is drawn from 16 bouts tracked for Jim Jeffords and 188 bouts tracked for Philadelphia Jack O'Brien. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Jeffords16bouts

O'Brien188bouts

How They Win ↓

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