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Harry Warren (0-0-1 across 1 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 no common opponents in Kill The Body's bout data.

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

Harry Warren

Tracked record

0–0–1

1 tracked bout

🇺🇸HEAVYWEIGHT

Philadelphia Jack O'Brien

147–16–24

190 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

The Numbers

0-0-1
Record
147-16-24 (edge)

One or both records are tracked, not career-verified.

50%
Win %
85% (edge)
0
Wins by knockout
55 (edge)
KO rate
37.41%
Stoppage rate (tracked wins)
37%

Counted from bouts Kill The Body has ingested, not a career total.

0 (edge)
Times stopped
3

Counted from bouts Kill The Body has ingested, not a career total.

0
Title reigns
0
Bouts per year
13

Across each fighter's tracked career span.

1
Bouts tracked
190

Tale of the Tape

Age
148
Stance
Orthodox
Division
Heavyweight
Nationality
American

How They Win

Tracked bouts only

Harry Warren · 0 wins

No tracked wins yet.

Philadelphia Jack O'Brien · 149 wins

KO/TKO
55
Decision
30
Other
64

Counted from the bouts Kill The Body has ingested for each fighter (1 and 190 respectively), 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

Harry Warren

D

No active streak · last fought Dec 9, 1898

Philadelphia Jack O'Brien

LLLWL

L3 streak · last fought Aug 15, 1911

Common Questions

Have Harry Warren and Philadelphia Jack O'Brien ever fought each other?
Yes. Harry Warren and Philadelphia Jack O'Brien met once on December 9, 1898, and the bout was a draw by NWS.
Who has the better record, Harry Warren or Philadelphia Jack O'Brien?
Harry Warren is 0-0-1 across the 1 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.
Who has more knockouts, Harry Warren or Philadelphia Jack O'Brien?
Harry Warren has 0 knockout wins and Philadelphia Jack O'Brien has 55. Philadelphia Jack O'Brien has more.
Do Harry Warren and Philadelphia Jack O'Brien have any common opponents?
Kill The Body's bout data shows no opponents that both Harry Warren and Philadelphia Jack O'Brien have faced.
How much fight data does Kill The Body have on Harry Warren and Philadelphia Jack O'Brien?
This comparison is drawn from 1 bout tracked for Harry Warren and 190 bouts tracked for Philadelphia Jack O'Brien. Method and activity splits reflect those bouts only.

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