Jack Brennan boxeador
- luta
- 11
- vitória
- 4
- derrota
- 6
- empate
- 1
- Estado
- inactive
- divisão
- welterweight
- Estreia
- 1919-07-04
- Altura
- -
- Alcance
- -
- Idade
- -
- Born
- -
- Death
- -
- Nascimento
- USA
| Data | Adversário | Últimos resultados dos adversários | Lugar | Resultado |
|---|---|---|---|---|
| 1922-05-19 | Cyclone Gavvy | DDWWDW | Newman A.C., Newman | LOST KO |
| 1920-05-20 | George Shade | WWWWL | Hollister | LOST Technical knockout |
| 1920-05-13 | Steve Dalton | DWWWDL | Coliseum, San Francisco | LOST Technical knockout |
| 1920-04-06 | Johnny Vierra | WLDDWW | Floral A.C., San Mateo | LOST Points |
| 1920-03-09 | Tom Tracey | W | Floral A.C., San Mateo | WIN Points |
| 1919-11-21 | Joe Stanton | LDWLDD | Dreamland Rink, San Francisco | LOST Points |
| 1919-10-03 | Jimmy Fortney | LDWWLD | Dreamland Rink, San Francisco | DRAW Points |
| 1919-09-01 | Joe Ferro | LLLDLL | Rodeo Arena, San Francisco | WIN Points |
| 1919-08-29 | Lee Harvey | debut | Dreamland Rink, San Francisco | WIN Points |
| 1919-08-15 | Joe Ferro | WLLLDL | Dreamland Rink, San Francisco | WIN Points |
| 1919-07-04 | Sammy Pelsinger | WLWDDL | Floral A.C., San Mateo | LOST Points |