Jeff Hammer boxer
- bouts
- 10
- won
- 5
- lost
- 4
- draw
- 1
- Status
- inactive
- Division
- lightweight
- Debut
- 1926-10-13
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1930-04-14 | Doty Turner | WLDDWW | Daum's Auditorium, Huron | LOST KO |
| 1928-02-27 | Connie Grosso | L | Athletic Club, Minneapolis | WIN |
| 1927-10-21 | Earl Lilledahl | LWLLWW | Municipal Auditorium, Minneapolis | LOST |
| 1927-08-18 | Frankie Marshall | LLWLWD | Stockton | WIN Points |
| 1927-04-01 | Billy Adams | WLWLLW | Dreamland Rink, San Francisco | LOST Points |
| 1927-02-15 | Roy Bailey | WLDLDL | Auditorium, Oakland | WIN Points |
| 1927-02-04 | Babe Anderson | WWWWWW | L-st Arena, Sacramento | LOST Points |
| 1926-12-21 | Sparky Daniels | LWLDLW | Crystal Pool, Seattle | WIN Points |
| 1926-12-14 | Cyclone Pete Santos | LWWLDW | Crystal Pool, Seattle | WIN KO |
| 1926-11-09 | Roughhouse Cooper | LDLLLL | Crystal Pool, Seattle | WIN Points |
| 1926-11-02 | Cyclone Pete Santos | LLLWWL | Crystal Pool, Seattle | DRAW Points |
| 1926-10-13 | K O Porter | W | Broadway Auditorium, Everett | LOST Points |