John O'Brien boxer
- bouts
- 11
- won
- 5
- lost
- 6
- draw
- 0
- Status
- inactive
- Division
- super middleweight
- Debut
- 1890-02-19
- Height
- -
- Reach
- -
- Age
- 44
- Born
- 1867-00-00
- Death
- 1911-03-25
- Nationality
- United Kingdom
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1895-04-13 | Frank Craig | WWWWWL | Central Hall, Holborn | LOST Technical knockout |
| 1895-04-03 | Jewey Cook | WLWWLW | Excelsior Baths, Bethnal Green | LOST Points |
| 1894-11-09 | Jewey Cook | LLWW | Eden Palace of Varieties, Holborn | LOST Points |
| 1894-10-08 | Frank Craig | WWWWWL | National Sporting Club, Covent Garden | LOST KO |
| 1894-04-23 | David St John | debut | National Sporting Club, Covent Garden | WIN KO |
| 1892-12-02 | Dave Burke | WWLWLL | National Sporting Club, Covent Garden | LOST Points |
| 1891-12-21 | Alf Mitchell | WWWLLL | National Sporting Club, Covent Garden | WIN KO |
| 1891-05-28 | Alf Ball | LWWLWD | The Pelican Club, Soho | WIN KO |
| 1891-03-07 | Ted White | WWWWWW | The Pelican Club, Soho | WIN KO |
| 1890-11-25 | Ted Bryant | W | Bob Habbijams West End School of Arms, Newman St, Soho | LOST KO |
| 1890-02-19 | Felix Scott | WWWWWW | Lyceum Theatre, Liverpool | WIN KO |