H&G All-Time Index public fighter card
Philadelphia Jack O'Brien
Light Heavyweight · United States
Philadelphia Jack O'Brien ranks #61 in the H&G All-Time Index at Light Heavyweight, with a 87.34 All-Time Index score and a 92-6-14 professional record. His career span on this page is 1896-1912.
- All-time rank
- #61Notables
- H&G All-Time Index
- 87.340-100 ranking index. This is the number that orders the list.
- Career record
- 92-6-14Professional wins, losses and draws.
- Active years
- 1896-1912
- Data Confidence
- HighDeep career evidence and a tighter peak-rating band in this release. Close ranks still need boxing judgement.
Career story
How Philadelphia Jack O'Brien's rating rose and fell year by year, with his peak marked.
Yearly peak-form Elo rating points. This curve is separate from the 0-100 ranking index.
Show the year-by-year numbers
| Year | Peak-form Elo rating |
|---|---|
| 1896 | 1,440 |
| 1897 | 1,487 |
| 1898 | 1,562 |
| 1899 | 1,628 |
| 1900 | 1,713 |
| 1901 | 1,763 |
| 1902 | 1,796 |
| 1903 | 1,796 |
| 1904 | 1,795 |
| 1905 | 1,778 |
| 1906 | 1,724 |
| 1907 | 1,704 |
| 1908 | 1,692 |
| 1909 | 1,670 |
| 1910 | 1,636 |
| 1911 | 1,619 |
Why this ranking
Philadelphia Jack O'Brien ranks #61 with a 87.34 score on the 60-100 H&G All-Time Index. His standout win in our data is over Bob Fitzsimmons in 1905, who reached a 1,674 Peak-form Elo, one of the stronger opponents on his record. In 4 cases a result was later reversed, including Marvin Hart, whom he beat once but lost to in a later fight. The honest tension is that the sustained head-to-head rating signal is around the typical top-1000 fighter rather than an exceptional lift, so this high placement rests more on résumé signals than on peak rating level. Our fight-by-fight records do not add up to his full public win-loss-draw total, so the head-to-head details here are a partial picture. Peak-form Elo is 1,796 (±135), separate from the 60-100 career Index.
What lifts or lowers this ranking
Bars show each weighted signal's relative size. Gold lifts the placement; grey holds it back.
A narrow signal for lineal, explicit undisputed or major multi-belt class control in this release data; it is not a full title history.
How much repeat elite-year presence supports the all-time case.
How much the record is helped by wins over contemporaneous title-level opponents.
Same-era separation left after the shared peak and sustained rating signal is removed.
How much major title evidence supports the rating.
Collapsed signal from peak rating, sustained rating and same-era separation.
Compare and explore
Put Philadelphia Jack O'Brien next to any other ranked fighter, or open the tools built on the same rating data.
Top fights
The highest-ranked fighters Philadelphia Jack O'Brien actually faced, biggest names first. Each one opens the head-to-head tool with the pair filled in.
- Tommy Ryan#19 · Index 93 · 1904
- Bob Fitzsimmons#56 · Index 88 · 1904, 1905
- Jack Johnson#57 · Index 88 · 1909
- Charles Kid McCoy#135 · Index 82 · 1904
- Sam Langford#146 · Index 82 · 1911
- Stanley Ketchel#167 · Index 81 · 1909
Show 1 more
- Marvin Hart#600 · Index 74 · 1902, 1903
Ranked-vs-ranked bouts from the pinned fight archive, ordered by opponent ranking. An objective record of who they shared a ring with.
Great rivals he never fought
Ranked fighters who shared a recognised division and whose competitive careers overlapped, with no bout between them on record. Each name opens the head-to-head tool with the pair filled in.
- Jack Root#152 · Middleweight / Super Middleweight / Light Heavyweight / Heavyweight · 5 overlapping years (1902-1906)
- Frank Klaus#331 · Middleweight / Super Middleweight · 8 overlapping years (1905-1912)
- George Gardner#433 · Middleweight / Light Heavyweight · 9 overlapping years (1902-1910)
- Sam McVea#808 · Heavyweight · 7 overlapping years (1906-1912)
Shared recognised division, overlapping competitive years, no recorded bout between them. A measured pattern only.
About this rating
Rankings: H&G All-Time Index v2.0.0. Reflects fights up to , the most recent on record. The ratings are fixed to that point, so fights after it are not yet included.
The rating itself is built from the 118 bouts we hold full data for from 1902 to 1912, which is why this count differs from the professional record above.
For the data-minded
Peak-form Elo rating: 1,796 (peak dated 1903-11-18). This best-point rating sits on its own scale and is not directly comparable with the 0-100 index.
The peak estimate carries an uncertainty band of about ±135 Elo, so read close comparisons with care.