Mickey O'Brien (Young O'Brien?) boxer
- bouts
- 28
- won
- 12
- lost
- 4
- draw
- 12
- Status
- inactive
- Division
- lightweight
- Debut
- 1910-04-16
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1916-10-30 | Jack Carpenter | DDDLWW | Manhattan A.C., Salt Lake City | WIN Points |
| 1916-09-28 | Pat Gilbert | WWWWLW | Murray Fire Hall, Murray | DRAW Points |
| 1916-02-28 | Sammy Good | DDDDD | Grand Theater, Salt Lake City | DRAW Points |
| 1916-02-21 | Pat Gilbert | WDDDDD | Manhattan A.C., Salt Lake City | DRAW Points |
| 1916-01-31 | Sammy Good | WWDWDD | Grand Theater, Salt Lake City | DRAW Points |
| 1913-03-12 | Billy Holmes | WLDDLL | Stockton | WIN Technical knockout |
| 1912-12-13 | Eddie Shannon | DDLDDD | Dreamland Pavilion, Seattle | DRAW Points |
| 1912-12-06 | Kid Stanley | L | Coliseum, Seattle | WIN KO |
| 1912-11-08 | Young Lyons | debut | Dreamland Pavilion, Seattle | WIN Technical knockout |
| 1912-11-02 | Pete McVeigh | WWLDLW | Wilkeson | DRAW Points |
| 1912-10-08 | Johnny Corbett | WWWWWW | Lewiston | LOST KO |
| 1912-01-26 | Maurice Thompson | DDDDWW | McCarthy's Gym, Butte | LOST Points |
| 1912-01-08 | Kid Bell | LLLWW | Colonial Theater, Salt Lake City | WIN KO |
| 1911-12-27 | Charley Midkiff | W | Colonial Theater, Salt Lake City | WIN Points |
| 1911-10-13 | Ray Temple | DDWDWW | Dreamland Rink, San Francisco | LOST |
| 1911-10-06 | Jimmy Fitten | WDDLDD | Dreamland Rink, San Francisco | LOST Points |
| 1911-09-22 | Rufe Turner | LWDDLD | Dreamland Rink, San Francisco | WIN Points |
| 1911-09-04 | Rufe Turner | WDLWDD | Stockton | WIN Points |
| 1911-07-28 | Maurice Thompson | WLWWDD | McCarthy's Gym, Butte | DRAW Points |
| 1911-07-04 | Maurice Thompson | WWLWWD | Bozeman | DRAW Points |
| 1911-06-29 | Maurice Thompson | WWWLWW | Butte | DRAW Points |
| 1911-02-03 | Billy Mack | debut | Empire Theatre, Seattle | WIN Points |
| 1911-01-27 | Eddie Marino | LLDLWL | Empire Theatre, Seattle | WIN KO |
| 1911-01-23 | Tommy Clark | LWLD | Labor Temple, Seattle | DRAW Points |
| 1911-01-20 | Kid Lewis | DD | Empire Theatre, Seattle | WIN Points |
| 1911-01-13 | Eddie Shannon | W | Empire Theatre, Seattle | WIN Points |
| 1911-01-11 | Tommy Clark | LWL | Sypher's Hall, Seattle | DRAW Points |
| 1910-04-16 | Young Scotty | LLLLD | Central A.C., Sacramento | DRAW Points |
