Jack Jock O'Brien boxer
- bouts
- 24
- won
- 9
- lost
- 12
- draw
- 3
- Status
- inactive
- Division
- flyweight
- Debut
- 1903-10-24
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- United Kingdom
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1916-09-02 | Paddy Cairns | debut | Oxford Street Ring, Middlesbrough | LOST Technical knockout |
| 1916-08-05 | Private R Wemm | WL | Oxford Street Ring, Middlesbrough | LOST Points |
| 1916-07-15 | Young Brady | debut | Oxford Street Ring, Middlesbrough | WIN KO |
| 1916-06-24 | Lance Corporal Vinton | L | Oxford Street Ring, Middlesbrough | LOST Points |
| 1914-04-18 | Young J Mulvey | WWLWLW | West Hartlepool Circus, West Hartlepool | LOST Points |
| 1913-05-10 | Young James | debut | Olympia Rink, Hartlepool | DRAW Points |
| 1912-11-16 | Billy Turnbull | LWLLWL | Olympia A.C., Hartlepool | WIN Points |
| 1908-11-28 | Moore | debut | The Circus, West Hartlepool | LOST KO |
| 1908-09-19 | Bill Cowley | DLLLWW | The Circus, West Hartlepool | LOST Points |
| 1908-04-11 | B Carter | debut | The Circus, West Hartlepool | WIN Points |
| 1908-03-28 | B Rutter | WLLWWD | The Circus, West Hartlepool | DRAW Points |
| 1908-02-15 | Charlie Harris | LLWLLW | The Circus, West Hartlepool | LOST Technical knockout |
| 1908-02-08 | B Rutter | WWLWLL | The Circus, West Hartlepool | LOST Points |
| 1907-12-07 | Jack Kelly | WLWWLL | The Circus, West Hartlepool | LOST Technical knockout |
| 1907-11-23 | C Jones | debut | The Circus, West Hartlepool | DRAW Points |
| 1907-10-19 | Joe Phillips | WLDLLD | The Circus, West Hartlepool | WIN Points |
| 1906-04-28 | Owen Kelly | LWWLWL | The Circus, West Hartlepool | LOST Technical knockout |
| 1906-04-14 | Owen Kelly | LLWWLW | The Circus, West Hartlepool | WIN Technical knockout |
| 1906-03-17 | J Cowley | W | The Circus, West Hartlepool | WIN Technical knockout |
| 1906-02-24 | Jasper Carter | debut | The Circus, West Hartlepool | LOST Points |
| 1905-09-16 | Jack Kelly | WDWWDW | The Circus, West Hartlepool | WIN Points |
| 1904-05-14 | Tom Hogan | LLL | The Circus, West Hartlepool | LOST Points |
| 1904-01-23 | Jim Kelly | debut | The Circus, West Hartlepool | WIN Technical knockout |
| 1903-10-24 | Owen Kelly | LWL | The Circus, West Hartlepool | WIN KO |