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Kill The Body

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Benny Leonard vs Shamus O'Brien — record, stats and common opponents compared

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Benny Leonard

Shamus O'Brien

Benny Leonard (185-22-9) and Shamus O'Brien (3-7 across 10 tracked bouts) are compared on record, finishing method, activity, and common opponents on Kill The Body. The two have met 2 times. They share 2 common opponents.

Leonard

185

Wins70 KO · 38%

22

Losses

9

Draws216 tracked bouts

O'Brien

Tracked record

3–7

counted from 10 bouts Kill The Body has ingested

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

Leonard leads 2–0

Benny Leonard and Shamus O'Brien have met 2 times; Leonard leads 2–0.

Benny Leonard and Shamus O'Brien have met 2 times; Leonard leads 2–0.
Met1916Feb 111916Mar 17Series
Benny LeonardFighter AWWonWWon2–0W–L
Shamus O'BrienFighter BLLostLLost0–2W–L
ResultNWSTKOR72Meetings

The Numbers

Leonard 6 · O'Brien 1 of 7 measurable rows
LeonardO'Brien
Record†
185-22-9 (edge)3-7
Win %0–100%
87.7% (edge)
30%
Wins by knockoutmax 70
70 (edge)
0
KO ratenot comparable
37.84%—
Stoppage rate (tracked wins)‡0–100%
38% (edge)
0%
Times stopped‡max 5
5
1 (edge)
Title reignsmax 2
2 (edge)
0
Bouts per year§max 10.3
10.3 (edge)
1.5
Bouts trackedcoveragemax 216
216
10

† 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

Heightnot held
Benny Leonard: 5′5″
Shamus O'Brien: No height on file
Reachnot held
Benny Leonard: 69″
Shamus O'Brien: No reach on file
Agenot held
Benny Leonard: Died aged 51
Shamus O'Brien: No date of birth
Stance
Benny Leonard: Orthodox
Shamus O'Brien: Not recorded

Benny Leonard left, Shamus 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
Benny Leonard185 wins · from 216 tracked bouts

Benny Leonard: 185 tracked wins — 70 by KO/TKO (38%), 17 on the cards (9%) and 98 by another method or unrecorded (53%). Counted from 216 bouts Kill The Body has ingested.

70 by KO/TKO 38%17 on the cards 9%98 by another method or unrecorded 53%

Shamus O'Brien3 wins · from 10 tracked bouts

Shamus O'Brien: 3 tracked wins — 3 by another method or unrecorded (100%). Counted from 10 bouts Kill The Body has ingested.

3 by another method or unrecorded 100%

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Benny Leonard 216, Shamus O'Brien 10 — not from a career-complete method table.

Common Opponents

2 shared

2 shared · Leonard better on 1 · O'Brien better on 1

Leonard

Opponent

O'Brien

  • Benny Leonard

    4–2–2 against

    Win, NWS

    1920

    Win, NWS

    1919

    Win, NWS

    1919

    Win, NWS

    1919

    Loss, NWS

    1916

    Draw, NWS

    1916

    Draw, NWS

    1916

    Loss, NWS

    1915

    DundeeO'Brien better

    Shamus O'Brien

    Loss, PTS

    1922

  • Benny Leonard

    4–0 against

    Win, TKO 8

    1922

    Win, UD

    1922

    Win, NWS

    1921

    Win, NWS

    1916

    KansasLeonard better

    Shamus O'Brien

    Loss, NWS

    1916

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

Benny Leonard had won four in a row before losing by stoppage to Jimmy McLarnin. Leonard last boxed on Oct 7, 1932.WWWWL

Sarko Aug 1932Rafferty Sep 1932Abbott Sep 1932Sarko Sep 1932McLarnin Oct 193210.3 tracked bouts per year

Shamus O'Brien last boxed on Oct 9, 1922 — 38,000 days ago. O'Brien had lost three straight, after one straight win.LWLLL

Walker Aug 1921Chaney Mar 1922Chaney Apr 1922Dundee Jul 1922Chaney Oct 19221.5 tracked bouts per year

Common Questions

With the rows behind them
Have Benny Leonard and Shamus O'Brien ever fought each other?
Yes. Benny Leonard and Shamus O'Brien have met 2 times and Benny Leonard leads the series 2-0.
The 2 meetings

WMar 17, 1916 · Leonard · TKO R7

WFeb 11, 1916 · Leonard · NWS

Head to Head ↓
Who has the better record, Leonard or O'Brien?
Benny Leonard is 185-22-9 and Shamus O'Brien is 3-7 across the 10 bouts Kill The Body has tracked. Benny Leonard has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Records · win %

Leonard185–22–987.7%

O'Brien3–730%

The Numbers ↓
Who has more knockouts, Leonard or O'Brien?
Benny Leonard has 70 knockout wins and Shamus O'Brien has 0. Benny Leonard has more.
Knockout wins · KO rate

Leonard7037.8%

O'Brien0

The Numbers ↓
Do Leonard and O'Brien have any common opponents?
Benny Leonard and Shamus O'Brien share 2 common opponents: Johnny Dundee and Rocky Kansas. Neither fighter fared better across the shared opponents overall.
2 shared opponents

Johnny Dundee4–2–2L

Rocky KansasWL

Common Opponents ↓
How much fight data does Kill The Body have on Leonard and O'Brien?
This comparison is drawn from 216 bouts tracked for Benny Leonard and 10 bouts tracked for Shamus O'Brien. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Leonard216bouts

O'Brien10bouts

How They Win ↓

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