John O'Brien boxer
- bouts
- 47
- won
- 30
- lost
- 17
- draw
- 0
- Status
- inactive
- Division
- lightweight
- Debut
- 1956-10-15
- Height
- -
- Reach
- -
- Age
- 42
- Born
- 1937-02-20
- Death
- 1979-03-30
- Nationality
- United Kingdom
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1971-07-26 | Manny Santos | WDWLWW | Festival Hall, Melbourne | LOST Technical knockout |
| 1971-06-21 | Manny Santos | WWDWLW | Festival Hall, Melbourne | LOST Points |
| 1971-03-26 | Jeff White | WWWLWW | Festival Hall, Brisbane | LOST Points |
| 1971-03-15 | Anthony Morodi | WWWWLW | Festival Hall, Melbourne | WIN Points |
| 1971-01-25 | Anthony Morodi | WWWWWW | Festival Hall, Melbourne | WIN Points |
| 1970-09-12 | Don Johnson | WLLLLL | Earls Court, Melbourne | WIN Points |
| 1970-08-18 | Gilberto Biondi | LWWWWW | San Remo Ballroom, Melbourne | WIN Technical knockout |
| 1970-02-23 | Paul Rourre | WLLDLW | Cafe Royal, Piccadilly | WIN Technical knockout |
| 1969-09-08 | Ernie Baronet | WWLLLL | City Hall, Durban | WIN Corner retirement |
| 1969-08-30 | Arnold Taylor | WWWWWL | Ellis Park Tennis Stadium, Johannesburg | WIN Points |
| 1969-03-24 | Jimmy Revie | WWWWWW | Grosvenor House (World Sporting Club), Mayfair | LOST Corner retirement |
| 1968-10-30 | Ray Opuku | LLLWLL | Town Hall, Hamilton | WIN Technical knockout |
| 1968-09-23 | Daniel Vermandere | WWWWWW | National Sporting Club, Piccadilly | WIN Technical knockout |
| 1967-11-24 | Johnny Famechon | WWWWWW | Festival Hall, Melbourne | LOST Technical knockout |
| 1967-02-03 | Floyd Robertson | WWWLWL | Accra Sports Stadium, Accra | WIN Corner retirement |
| 1965-12-11 | Mario Diaz | WWWWWW | El Toreo de Cuatro Caminos, Mexico City | LOST Technical knockout |
| 1965-09-07 | Jesus Saucedo | WWLLLL | Earls Court Arena, Kensington | WIN KO |
| 1965-02-04 | Rafiu King | WWLLWL | Kelvin Hall, Glasgow | LOST Technical knockout |
| 1964-12-07 | Dennis Adjei | DLDLLW | Free Trade Hall, Manchester | WIN Technical knockout |
| 1963-12-09 | Howard Winstone | WWWWWW | National Sporting Club, Piccadilly | LOST Points |
| 1963-09-12 | Bobby Fisher | WWWWLW | Ice Rink, Paisley | WIN KO |
| 1963-04-05 | Lino Mastellaro | DWLWWW | Milan | LOST Points |
| 1963-02-28 | Con Mount Bassie | LLWWLW | Kelvin Hall, Glasgow | WIN KO |
| 1963-02-07 | George Bowes | WLWWLL | Tower Circus, Blackpool | WIN Technical knockout |
| 1962-11-12 | Phil Lundgren | LDWWWD | Civic Hall, Croydon | WIN Technical knockout |
| 1962-10-15 | Andy Doherty | LLLLLW | National Sporting Club, Piccadilly | WIN Technical knockout |
| 1962-09-05 | George Bowes | WWWLWL | Town Hall, Shoreditch | LOST Technical knockout |
| 1962-06-05 | Kenny Field | WWWWWD | Empire Pool, Wembley | LOST Technical knockout |
| 1959-12-07 | Percy Lewis | LWWWLW | Ice Rink, Nottingham | LOST KO |
| 1959-09-15 | Terry Spinks | WWWWLL | Empire Pool, Wembley | WIN Points |
| 1959-06-17 | Eric Brett | LLWLWL | Firhill Park, Glasgow | WIN Points |
| 1959-05-05 | Johnny Howard | WLWWW | Shoreditch Town Hall, Shoreditch | WIN Points |
| 1959-04-27 | Con Mount Bassie | WLLLWL | New St James Hall, Newcastle | WIN Points |
| 1959-04-15 | Aryee Jackson | WLWWWL | Sophia Gardens Pavilion, Cardiff | LOST Points |
| 1958-06-16 | Roy Jacobs | LWWWWL | Engineer's Club, West Hartlepool | LOST Points |
| 1958-05-28 | Chic Brogan | WWWWLW | Town Hall, Hamilton | LOST Points |
| 1958-05-20 | George Dormer | WLLWWW | Earls Court Empress Hall, Kensington | WIN Points |
| 1958-03-25 | George Dormer | WWLLWW | Earls Court Empress Hall, Kensington | LOST Points |
| 1958-02-26 | Roy Jacobs | WWWWWL | Ice Rink, Paisley | LOST Points |
| 1957-11-23 | Gil Neill | WWWLWW | Kings Hall, Belfast | WIN Points |
| 1957-11-08 | George Mason | WWWWW | Tower Circus, Blackpool | WIN Points |
| 1957-10-21 | Tommy Houston | WW | Farrer Street Stadium, Middlesbrough | WIN KO |
| 1957-07-15 | Jack Richards | WWWW | Engineer's Club, West Hartlepool | WIN KO |
| 1957-03-04 | Len Harvey | debut | New St James Hall, Newcastle | WIN Points |
| 1956-11-19 | Johnny Bamborough | debut | Middlesbrough | WIN Points |
| 1956-11-02 | Jackie Tiller | LLLLWW | Blackpool | WIN Points |
| 1956-10-15 | Arthur McGregor | debut | New St James Hall, Newcastle | WIN Points |
