Have Joe Choynski and Philadelphia Jack O'Brien ever fought each other?

Yes. Joe Choynski and Philadelphia Jack O'Brien have met 2 times and Philadelphia Jack O'Brien leads the series 2-0.

Who has the better record, Choynski or O'Brien?

Joe Choynski is 59-17-6 and Philadelphia Jack O'Brien is 147-16-24. Philadelphia Jack O'Brien has the higher win percentage.

Who has more knockouts, Choynski or O'Brien?

Joe Choynski has 39 knockout wins and Philadelphia Jack O'Brien has 55. Philadelphia Jack O'Brien has more.

Do Choynski and O'Brien have any common opponents?

Joe Choynski and Philadelphia Jack O'Brien share 11 common opponents: Jack Johnson, Bob Fitzsimmons and Jack Williams (and 8 others). Philadelphia Jack O'Brien fared better against 7 of them.

How much fight data does Kill The Body have on Choynski and O'Brien?

This comparison is drawn from 84 bouts tracked for Joe Choynski and 188 bouts tracked for Philadelphia Jack O'Brien. Method and activity splits reflect those bouts only.

Joe Choynski vs Philadelphia Jack O'Brien — Records, Stats & Common Opponents

🇺🇸HEAVYWEIGHT

Joe Choynski (59-17-6) 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 2 times. They share 11 common opponents.

Choynski

Wins39 KO · 66%

Losses

Draws84 tracked bouts

O'Brien

147

Wins55 KO · 37%

Losses

Draws188 tracked bouts

Head to Head

O'Brien leads 2–0

Joe Choynski and Philadelphia Jack O'Brien have met 2 times; O'Brien leads 2–0.
Met	1902Sep 29	1903Mar 30	Series
Joe ChoynskiFighter A	LLost	LLost	0–2W–L
Philadelphia Jack O'BrienFighter B	WWon	WWon	2–0W–L
Result	PTSO'Brien vs Choynski	NWSO'Brien vs Choynski	2Meetings

The Numbers

Choynski 2 · O'Brien 5 of 7 measurable rows

ChoynskiEdge = longer wingO'Brien

Record: 59-17-6147-16-24 (edge)
Win %0–100%: 75.6%
85% (edge)
Wins by knockoutmax 55: 39
55 (edge)
KO rate0–100%: 66.1% (edge)
37.41%
Stoppage rate (tracked wins)^†0–100%: 66% (edge)
37%
Times stopped^†max 10: 10
3 (edge)
Title reignslevelmax 0: 0
0
Bouts per year^‡max 12.8: 5.2
12.8 (edge)
Bouts trackedcoveragemax 188: 84
188

† 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: Joe Choynski: 6′0″; Philadelphia Jack O'Brien: No height on file
Agenot comparable: Joe Choynski: Died aged 74; Philadelphia Jack O'Brien: Died aged 64
Stance: Joe Choynski: Orthodox; Philadelphia Jack O'Brien: Orthodox

Joe Choynski 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

Joe Choynski59 wins · from 84 tracked bouts

39 by KO/TKO 66%15 on the cards 25%5 by another method or unrecorded 8%

Philadelphia Jack O'Brien147 wins · from 188 tracked bouts

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 — Joe Choynski 84, Philadelphia Jack O'Brien 188 — not from a career-complete method table.

Common Opponents

11 shared

11 shared · Choynski better on 3 · O'Brien better on 7 · even on 111 shared · Joe Choynski better on 3 · Philadelphia Jack O'Brien better on 7 · even on 1

ChoynskiJoe Choynski

Opponent

O'BrienPhiladelphia Jack O'Brien

Joe Choynski
Win, KO 3
1901Feb 1901
JohnsonJack JohnsonUnited States 69–11–10 · HeavyweightChoynski betterJoe Choynski better — 1–0 to 0–0–1
Philadelphia Jack O'Brien
Draw, NWS
1909May 1909
Joe Choynski
Draw, PTS
1894Jun 1894
FitzsimmonsBob FitzsimmonsUnited States 69–12–14Choynski betterJoe Choynski better — 0–0–1 to 1–1
Philadelphia Jack O'Brien
1–1 against
Win, RTD 13
1905Dec 1905
Loss, NWS
1904Jul 1904
Joe Choynski
Win, NWS
1904Nov 1904
WilliamsJack WilliamsO'Brien betterPhiladelphia Jack O'Brien better — 3–0 to 1–0
Philadelphia Jack O'Brien
3–0 against
Win, KO 3
1903Dec 1903
Win, NWS
1903May 1903
Win, NWS
1902May 1902
Joe Choynski
0–2–1 against
Loss, RTD 4
1900Jan 1900
Draw, PTS
1899Oct 1899
Loss, PTS
1899Mar 1899
McCoyKid McCoyUnited States 79–6–11 · MiddleweightO'Brien betterPhiladelphia Jack O'Brien better — 0–0–1 to 0–2–1
Philadelphia Jack O'Brien
Draw, NWS
1904May 1904
Joe Choynski
0–2 against
Loss, KO 1
1904Jan 1904
Loss, KO 1
1901Mar 1901
CarterKid CarterO'Brien betterPhiladelphia Jack O'Brien better — 3–0 to 0–2
Philadelphia Jack O'Brien
3–0 against
Win, TKO
1904Apr 1904
Win, NWS
1903Jul 1903
Win, DQ 11
1898Nov 1898
Joe Choynski
Loss, NWS
1903Nov 1903
HartMarvin HartUnited States 28–7–4 · HeavyweightO'Brien betterPhiladelphia Jack O'Brien better — 1–1 to 0–1
Philadelphia Jack O'Brien
1–1 against
Loss, NWS
1903May 1903
Win, NWS
1902Nov 1902
Joe Choynski
Loss, TKO 7
1900Feb 1900
WalcottBarbados Joe WalcottBarbados 96–31–27 · WelterweightO'Brien betterPhiladelphia Jack O'Brien better — 1–0–1 to 0–1
Philadelphia Jack O'Brien
1–0–1 against
Draw, PTS
1903Apr 1903
Win, NWS
1902Apr 1902
Joe Choynski
Win, KO 6
1901May 1901
WeinigAl WeinigO'Brien betterPhiladelphia Jack O'Brien better — 2–0 to 1–0
Philadelphia Jack O'Brien
2–0 against
Win, TKO 4
1903Feb 1903
Win, KO 12
1903Jan 1903
Joe Choynski
2–1 against
Win, KO 2
1903Jan 1903
Win, PTS
1900Feb 1900
Loss, KO 6
1896Nov 1896
MaherPeter MaherIreland 142–28–6O'Brien betterPhiladelphia Jack O'Brien better — 2–0 to 2–1
Philadelphia Jack O'Brien
2–0 against
Win, NWS
1902Oct 1902
Win, NWS
1902Oct 1902
Joe Choynski
Win, PTS
1893Feb 1893
WestTommy WestEvenEven — 1–0 both
Philadelphia Jack O'Brien
Win, NWS
1900Oct 1900
Joe Choynski
Win, KO
1892Apr 1892
McCarthyCharles Bull McCarthyChoynski betterJoe Choynski better — 1–0 to 1–1
Philadelphia Jack O'Brien
1–1 against
Win, PTS
1897Jun 1897
Loss, NWS
1897May 1897

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

Joe Choynski has won once since losses to Marvin Hart and Kid Carter. Choynski last boxed on Nov 21, 1904.LWLLW

Burley Jun 1903Burley Aug 1903Hart Nov 1903Carter Jan 1904Williams Nov 19045.2 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 Joe Choynski and Philadelphia Jack O'Brien ever fought each other?: Yes. Joe Choynski and Philadelphia Jack O'Brien have met 2 times and Philadelphia Jack O'Brien leads the series 2-0.
Who has the better record, Choynski or O'Brien?: Joe Choynski is 59-17-6 and Philadelphia Jack O'Brien is 147-16-24. Philadelphia Jack O'Brien has the higher win percentage.
Who has more knockouts, Choynski or O'Brien?: Joe Choynski has 39 knockout wins and Philadelphia Jack O'Brien has 55. Philadelphia Jack O'Brien has more.
Do Choynski and O'Brien have any common opponents?: Joe Choynski and Philadelphia Jack O'Brien share 11 common opponents: Jack Johnson, Bob Fitzsimmons and Jack Williams (and 8 others). Philadelphia Jack O'Brien fared better against 7 of them.
How much fight data does Kill The Body have on Choynski and O'Brien?: This comparison is drawn from 84 bouts tracked for Joe Choynski and 188 bouts tracked for Philadelphia Jack O'Brien. Method and activity splits reflect those bouts only.

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

Joe Choynski

Philadelphia Jack O'Brien