Harry O'Brien boxer
- bouts
- 21
- won
- 15
- lost
- 5
- draw
- 0
- Status
- inactive
- Division
- middleweight
- Debut
- 1925-10-28
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1928-07-31 | Johnny Walker | WWWWWW | Punch Bowl Arena, Alan | LOST Points |
| 1928-07-03 | George Brown | debut | Punch Bowl Arena, Alan | WIN Technical knockout |
| 1928-06-07 | Johnny Walker | WWWWWW | Wallace | LOST Points |
| 1928-05-31 | Don Jones | WLDWWW | Coeur d'Alene | WIN Points |
| 1928-05-15 | Jack Rau | DLLDLW | Elks Gym, Coeur d'Alene | WIN Points |
| 1927-09-21 | Walter Farren | D | Arena, Alan | WIN KO |
| 1927-09-07 | Ray Wynne | L | Elks Gym, Coeur d'Alene | WIN KO |
| 1927-08-19 | Dean Pierce | LWWDWL | Baseball Park, Kellogg | WIN KO |
| 1927-08-02 | Rusty Johnson | debut | Punch Bowl Arena, Alan | WIN Technical knockout |
| 1927-06-21 | George McCormick | LLLDLD | Punch Bowl Arena, Alan | LOST Points |
| 1927-06-10 | Louis Posey | DWWWD | Four-L Club, Alan | WIN Technical knockout |
| 1927-05-24 | Vic Van Damm | WLDDL | Arena, Alan | WIN Technical knockout |
| 1927-05-10 | Buster Morris | WWLWDL | Four-L Club, Coeur d'Alene | WIN Technical knockout |
| 1927-04-30 | Delbert (Battling) Mabe | WLDWLW | Wallace | WIN |
| 1926-09-15 | Dean Pierce | WWLW | Elks Gym, Coeur d'Alene | NC No Contest |
| 1926-09-06 | Steamboat Jackson | debut | Arena, Alan | WIN KO |
| 1926-08-10 | Dean Pierce | WWL | Arena, Alan | LOST Points |
| 1926-06-11 | Tommy Mack | W | Arena, Alan | LOST KO |
| 1926-05-25 | Babe Shanks | debut | Arena, Alan | WIN KO |
| 1926-05-04 | Billy Young | LWDLLL | Four-L Club, Coeur d'Alene | WIN Technical knockout |
| 1925-10-28 | Young McCoy | debut | Elks Gym, Coeur d'Alene | WIN KO |