Len O'Brien boxer
- bouts
- 10
- won
- 6
- lost
- 3
- draw
- 1
- Status
- inactive
- Division
- welterweight
- Debut
- 1947-12-05
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- United Kingdom
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1950-09-12 | Tony Penprase | WLLLWW | Town Hall, Bournemouth | LOST Technical knockout |
| 1950-04-03 | Tony Penprase | WLWLLL | Corn Exchange, Plymouth | LOST Points |
| 1949-12-12 | Tony Penprase | WWLWLW | Grand Pier Pavilion, Weston-super-Mare | WIN Points |
| 1949-10-21 | Tony Penprase | DWWWLW | Market Hall, Newton Abbot | WIN Points |
| 1949-07-25 | Owen Randall | LWWWLW | Town Football Ground, Swindon | WIN Points |
| 1949-03-25 | Len Brooks | WWDWWL | Corn Exchange, Plymouth | WIN Points |
| 1948-11-27 | Owen Randall | WWLWWW | Chard | WIN Points |
| 1948-06-22 | Frank Bassinger | WWLWLL | St James Park (Exeter FC), Exeter | LOST Technical knockout |
| 1948-02-09 | Len Brooks | WWWWDL | Bridgewater | WIN Technical knockout |
| 1947-12-05 | Len Brooks | WWWW | Corn Exchange, Plymouth | DRAW Points |