Johnny O'Brien boxeador
- luta
- 11
- vitória
- 10
- derrota
- 0
- empate
- 1
- Estado
- inactive
- divisão
- heavyweight
- Estreia
- 1930-10-29
- Altura
- -
- Alcance
- -
- Idade
- -
- Born
- -
- Death
- -
- Nascimento
- USA
| Data | Adversário | Últimos resultados dos adversários | Lugar | Resultado |
|---|---|---|---|---|
| 1931-07-15 | Dell Price | WWDWWL | Wilmington Bowl, Wilmington | DRAW Points |
| 1931-06-16 | Dell Price | WWWDWW | Olympic Auditorium, Los Angeles | WIN Technical knockout |
| 1931-06-05 | Jack Van Noy | WWWWWW | Legion Stadium, Hollywood | WIN Points |
| 1931-05-15 | Alf Cleverley | LWLLLL | Legion Stadium, Hollywood | WIN KO |
| 1931-05-01 | Kenneth Lee | WWWWWL | Legion Stadium, Hollywood | WIN Technical knockout |
| 1931-03-20 | Jack Van Noy | LWL | Legion Stadium, Hollywood | WIN Technical knockout |
| 1931-03-12 | Hugh Shropshire | WWLLLD | Pasadena | WIN Technical knockout |
| 1931-02-19 | Jack Van Noy | debut | Pasadena Arena, Pasadena | WIN Technical knockout |
| 1931-02-05 | Tony Brown | WWLWLW | Pasadena | WIN Points |
| 1931-01-29 | Pete Lacey | W | Pasadena | WIN KO |
| 1930-10-29 | Johnny Willis | debut | Wilmington Bowl, Wilmington | WIN Technical knockout |