Jack Brennan pugile
- combattimenti
- 11
- vinto
- 4
- perduto
- 6
- pareggiare
- 1
- Stato
- inactive
- Divisione
- welterweight
- Debutto
- 1919-07-04
- Altezza
- -
- Arrivare a
- -
- Età
- -
- Nato
- -
- Morte
- -
- Nazionalità
- USA
| Data | Avversario | Ultimi risultati degli avversari | Luogo | Risultato |
|---|---|---|---|---|
| 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 |