Mike O'Brien boxer
- bouts
- 4
- won
- 0
- lost
- 4
- draw
- 0
- Status
- inactive
- Division
- lightweight
- Debut
- 1919-03-14
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1929-06-14 | Young Ritchie | LWWLLL | Island Park Arena, Auburn | LOST Points |
| 1922-06-23 | Frankie Campbell | debut | Broadway Auditorium, Buffalo | LOST KO |
| 1921-12-20 | Jimmy Slattery | WW | Broadway Auditorium, Buffalo | LOST KO |
| 1920-02-06 | Donnie Mack | debut | Miller's Hall, Buffalo | LOST Technical knockout |
| 1919-04-02 | Young O'Leary | debut | Bresnahan's Hall, Buffalo | LOST |
| 1919-03-14 | Buddy Ridley | WL | Superior A.C., Buffalo | LOST |
