Jack Sieberg (Jack Seiberg) boxer
- bouts
- 7
- won
- 2
- lost
- 4
- draw
- 1
- Status
- inactive
- Division
- heavyweight
- Debut
- 1909-03-12
- Height
- 6′ 0″/183cm
- Reach
- 75″/191cm
- Age
- -
- Born
- -
- Death
- -
- Nationality
- -
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 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 |
