Philadelphia Jack O'Brien
147–16 · 162 recorded bouts · 1896–1911
Philadelphia Jack O'Brien finished 37% of 147 wins inside the distance — the 16th percentile for middleweight boxing, where the median is 60%. No reach is on record, so this page compares record rather than measurements.
What is on record
| Reach | not recorded | |
|---|---|---|
| Height | 70″ (177.8 cm) | |
| Stance | Orthodox | |
| Division | Middleweight Boxing competed at 3: heavyweight, light heavyweight, middleweight — compared here against the last | |
| Peak era | 1900s | |
| Country | United States |
Wikipedia carries no reach figure for Philadelphia Jack O'Brien, so the reach-advantage comparison this site is built on cannot be computed. Everything below comes from the record instead.
Record
Boxing record
147–16
192 bouts on record
Finish rate
37%
of wins ended inside the distance — middleweight boxing median 60%, 16th percentile
The career, bout by bout
162 recorded bouts from 1896 to 1911. Every incumbent shows this as a table you have to read; here it is as a shape you can see.
Career span
16y
1896–1911
Longest unbeaten run
49
without a loss — draws do not break it
Busiest year
1902
25 bouts
Recorded bouts
162
161 with a date
Fights
| Year | Result | Opponent | Method | Rd |
|---|---|---|---|---|
| 1911 | L | Sam Langford | KO/TKO | 5 |
| 1910 | L | Ben Koch | — | 6 |
| 1910 | L | Harry Ramsey | — | 6 |
| 1910 | W | Mike Schreck | — | 10 |
| 1910 | L | Al Kaufman | — | 6 |
| 1910 | L | Sam Langford | KO/TKO | 5 |
| 1909 | W | Charley Stevenson | — | 6 |
| 1909 | W | Fireman Jim Flynn | — | 6 |
| 1909 | L | Stanley Ketchel | KO/TKO | 3 |
| 1909 | D | Jack Johnson | Draw | 6 |
| 1909 | W | Fred Cooley | Decision | 2 |
| 1908 | W | George Cole | — | 6 |
| 1908 | W | Tom Lenihan | KO/TKO | 4 |
| 1908 | W | Larry Temple | — | 6 |
| 1908 | W | Jack Rush | KO/TKO | 7 |
| 1908 | W | Jack Blackburn | — | 6 |
| 1908 | W | Jack Bonner | — | 6 |
| 1908 | D | Bob Ward | Decision | 10 |
| 1907 | W | Bill Heveron | KO/TKO | 1 |
| 1907 | L | Tommy Burns | Decision | 20 |
| 1907 | W | Abdul 'The Turk' Malgan | DQ | 5 |
| 1906 | D | Tommy Burns | Decision | 20 |
| 1906 | W | Fred Cooley | KO/TKO | 3 |
| 1906 | W | Jim Tremble | KO/TKO | 9 |
| 1906 | W | Ted Beecham | KO/TKO | 2 |
| 1906 | D | Sam Berger | Draw | 6 |
| 1905 | W | Bob Fitzsimmons | KO/TKO | 13 |
| 1905 | W | Al Kaufman | KO/TKO | 17 |
| 1905 | W | Bill Bates | DQ | 6 |
| 1905 | D | Jack Twin Sullivan | Decision | 20 |
| 1905 | L | Hugo Kelly | Decision | 10 |
| 1905 | W | Young Peter Jackson | Decision | 10 |
| 1905 | W | John Willie | — | 6 |
| 1904 | W | Morris Harris | — | 6 |
| 1904 | W | Larry Temple | — | 6 |
| 1904 | W | Black Bill | — | 6 |
| 1904 | W | Dixie Kid | — | 6 |
| 1904 | W | John Willie | — | 6 |
| 1904 | W | Jim Jeffords | KO/TKO | 3 |
| 1904 | W | Tommy Burns | — | 6 |
| 1904 | W | Joe Butler | KO/TKO | 1 |
| 1904 | W | Billy Stift | KO/TKO | 2 |
| 1904 | W | Hugo Kelly | — | 6 |
| 1904 | L | Bob Fitzsimmons | — | 6 |
| 1904 | W | George Cole | — | 6 |
| 1904 | D | Charles Kid McCoy | Draw | 6 |
| 1904 | W | Kid Carter | KO/TKO | 3 |
| 1904 | W | Jack Twin Sullivan | KO/TKO | 3 |
| 1904 | W | Mike Schreck | Decision | 15 |
| 1904 | W | Charles Mack | KO/TKO | 3 |
| 1904 | D | Tommy Ryan | Draw | 6 |
| 1903 | D | Hugo Kelly | Decision | 10 |
| 1903 | W | Jim Jeffords | — | 6 |
| 1903 | W | Jack Twin Sullivan | Decision | 15 |
| 1903 | W | Diamond Dick Torpey | Decision | 6 |
| 1903 | W | Mike Schreck | Decision | 6 |
| 1903 | W | Jack Williams | KO/TKO | 3 |
| 1903 | W | Bill Heveron | KO/TKO | 4 |
| 1903 | W | Jack Mullen | KO/TKO | 8 |
| 1903 | W | Charlie Haghey | KO/TKO | 3 |
Showing the 60 most recent of 162 recorded bouts.
28 of these opponents have their own page here.
How this is worked out
- Measurements and records are read from the fighter's English Wikipedia infobox; the fight list is parsed from the article's own results table.
- Reach advantage is (reach − height) ÷ height as a percentage, so fighters of different sizes compare directly.
- Percentiles rank this fighter among the 256 middleweight boxing fighters in the dataset — chosen because it is the most specific group of at least 30 that this fighter belongs to.
Reach advantage = (reach − height) ÷ height × 100
Source: Philadelphia Jack O'Brien on English Wikipedia (CC BY-SA 4.0), as of 2026-07-07. Percentiles and derived figures computed here.