Les O'Brien boxer
- bouts
- 5
- won
- 1
- lost
- 3
- draw
- 1
- Status
- inactive
- Division
- super lightweight
- Debut
- 1931-10-20
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Australia
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1932-12-31 | Les Thomas | debut | North Sydney Stadium, Sydney | WIN KO |
| 1932-11-25 | Tommy Pelco | LL | Ryde Stadium, Sydney | LOST Points |
| 1932-01-21 | Charlie Ray | L | Newtown Stadium, Sydney | DRAW Points |
| 1931-11-04 | Billy Blackwell | DWWDWW | Canterbury Velodrome, Sydney | LOST KO |
| 1931-10-20 | Fred Davids | debut | Leichhardt Stadium, Sydney | LOST Points |