Mike O'Brien boxer
- bouts
- 4
- won
- 2
- lost
- 1
- draw
- 0
- Status
- inactive
- Division
- lightweight
- Debut
- 1904-01-14
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1904-03-21 | Pat McHenry | debut | Broadway A.C., Chester | DRAW |
| 1904-02-20 | Kid Barber | W | Richmond A.C., Philadelphia | NC No Contest |
| 1904-02-18 | Johnny Carney | L | Broadway A.C., Philadelphia | LOST |
| 1904-02-12 | Phil Griffin | LDWWLW | Lenox A.C., Philadelphia | DRAW |
| 1904-02-11 | Charley Kelly | WLWWDL | Broadway A.C., Philadelphia | WIN Technical knockout |
| 1904-02-04 | Joe Jackson | LWLWLL | Broadway A.C., Philadelphia | DRAW |
| 1904-02-01 | Eddie Chambers | WWWLDD | Lenox A.C., Philadelphia | LOST |
| 1904-01-23 | Young Riley | WDWLDW | Richmond A.C., Philadelphia | WIN Technical knockout |
| 1904-01-14 | Tommy Brady | WWDWWL | Broadway A.C., Philadelphia | LOST |
