Have Jimmy O'Brien and Kid Kaplan ever fought each other?

Yes. Jimmy O'Brien and Kid Kaplan met once on August 9, 1930, and Kid Kaplan won by TKO in round 9.

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

Jimmy O'Brien is 0-6 across the 6 bouts Kill The Body has tracked and Kid Kaplan is 121-22-16. Kid Kaplan has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.

Who has more knockouts, O'Brien or Kaplan?

Jimmy O'Brien has 0 knockout wins and Kid Kaplan has 27. Kid Kaplan has more.

Do O'Brien and Kaplan have any common opponents?

Jimmy O'Brien and Kid Kaplan share 1 common opponent: Herbert Lewis Hardwick. Neither fighter fared better across the shared opponents overall.

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

This comparison is drawn from 6 bouts tracked for Jimmy O'Brien and 160 bouts tracked for Kid Kaplan. Method and activity splits reflect those bouts only.

Jimmy O'Brien vs Kid Kaplan — Records, Stats & Common Opponents

Jimmy O'Brien

🇺🇸UNITED STATES

Kid Kaplan

Jimmy O'Brien (0-6 across 6 tracked bouts) and Kid Kaplan (121-22-16) are compared on record, finishing method, activity, and common opponents on Kill The Body. The two have met once. They share 1 common opponent.

O'Brien

Tracked record

0–6

counted from 6 bouts Kill The Body has ingested

Kaplan

121

Wins27 KO · 22%

Losses

Draws160 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

Kaplan leads 1–0

Jimmy O'Brien and Kid Kaplan have met 1 time; Kaplan leads 1–0.
Met	1930Aug 9	Series
Jimmy O'BrienFighter A	LLost	0–1W–L
Kid KaplanFighter B	WWon	1–0W–L
Result	TKOR9Kaplan vs O'Brien	1Meeting

Kaplan vs O'Brien · Aug 9, 1930

The Numbers

O'Brien 0 · Kaplan 5 of 5 measurable rows

O'BrienEdge = longer wingKaplan

Record^†: 0-6121-22-16 (edge)
Win %0–100%: 0%
81.1% (edge)
Wins by knockoutmax 27: 0
27 (edge)
KO ratenot comparable: —22.31%
Stoppage rate (tracked wins)^‡not comparable: —22%
Times stopped^‡max 5: 5
3 (edge)
Title reignslevelmax 0: 0
0
Bouts per year^§max 10.7: 0.1
10.7 (edge)
Bouts trackedcoveragemax 160: 6
160

† 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

Reachnot held: Jimmy O'Brien: No reach on file; Kid Kaplan: 63″
Agenot held: Jimmy O'Brien: No date of birth; Kid Kaplan: Died aged 69
Stance: Jimmy O'Brien: Not recorded; Kid Kaplan: Orthodox

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

How They Win

Tracked bouts only

Jimmy O'Brien0 wins · from 6 tracked bouts

No tracked wins for O'Brien yet.

Kid Kaplan121 wins · from 160 tracked bouts

27 by KO/TKO 22%75 on the cards 62%19 by another method or unrecorded 16%

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Jimmy O'Brien 6, Kid Kaplan 160 — not from a career-complete method table.

Common Opponents

1 shared

1 shared · even on 11 shared · even on 1

O'BrienJimmy O'Brien

Opponent

KaplanKid Kaplan

Jimmy O'Brien
Loss, TKO 6
1933Jul 1933
HardwickHerbert Lewis HardwickUnited States 178–58–11EvenEven — 0–1 both
Kid Kaplan
Loss, PTS
1933Feb 1933

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

Jimmy O'Brien last boxed on Sep 9, 1946 — 29,261 days ago. O'Brien had lost six straight.LLLLL

Kaplan Aug 1930Hardwick Jul 1933Ray Mar 1945Savold Jun 1946Moore Sep 19460.1 tracked bouts per year

Kid Kaplan had won one in a row before losing a decision to Herbert Lewis Hardwick. Kaplan last boxed on Feb 20, 1933.WWLWL

Rossi Jul 1932Petrolle Aug 1932Villa Sep 1932Holmes Oct 1932Hardwick Feb 193310.7 tracked bouts per year

Common Questions

With the rows behind them

Have Jimmy O'Brien and Kid Kaplan ever fought each other?: Yes. Jimmy O'Brien and Kid Kaplan met once on August 9, 1930, and Kid Kaplan won by TKO in round 9.
Who has the better record, O'Brien or Kaplan?: Jimmy O'Brien is 0-6 across the 6 bouts Kill The Body has tracked and Kid Kaplan is 121-22-16. Kid Kaplan has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Who has more knockouts, O'Brien or Kaplan?: Jimmy O'Brien has 0 knockout wins and Kid Kaplan has 27. Kid Kaplan has more.
Do O'Brien and Kaplan have any common opponents?: Jimmy O'Brien and Kid Kaplan share 1 common opponent: Herbert Lewis Hardwick. Neither fighter fared better across the shared opponents overall.
How much fight data does Kill The Body have on O'Brien and Kaplan?: This comparison is drawn from 6 bouts tracked for Jimmy O'Brien and 160 bouts tracked for Kid Kaplan. Method and activity splits reflect those bouts only.

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Jimmy O'Brien vs Kid Kaplan — record, stats and common opponents compared

Jimmy O'Brien

Kid Kaplan