Jack Sieberg (Jack Seiberg) boxeador
- luta
- 7
- vitória
- 2
- derrota
- 4
- empate
- 1
- Estado
- inactive
- divisão
- heavyweight
- Estreia
- 1909-03-12
- Altura
- 6′ 0″/183cm
- Alcance
- 75″/191cm
- Idade
- -
- Born
- -
- Death
- -
- Nascimento
- -
| Data | Adversário | Últimos resultados dos adversários | Lugar | Resultado |
|---|---|---|---|---|
| 1914-03-13 | Soldier Elder | DWLWLD | Pavilion Rink, San Francisco | LOST KO |
| 1911-02-21 | Frank Moran | WWLWWD | Brown's Gym, New York | LOST KO |
| 1909-10-22 | Jim Cameron | WWLWWD | McCarey's Pavilion, Los Angeles | LOST KO |
| 1909-09-29 | Salinas Jack Burns | LWWWWL | Naud Junction, Los Angeles | LOST KO |
| 1909-09-04 | Beans Carranza | WLL | Skating Rink, Marshfield | DRAW Points |
| 1909-06-25 | Lew Taylor | WD | FruitvaleStreet A.C., Oakland | WIN KO |
| 1909-03-12 | Walter Monahan | debut | Dreamland Rink, San Francisco | WIN Technical knockout |