Kid O'Brien boxer
- bouts
- 11
- won
- 1
- lost
- 6
- draw
- 4
- Status
- inactive
- Division
- welterweight
- Debut
- 1911-08-28
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Panama
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1923-01-14 | Kid Martin | WWLWWW | Central American Stadium, Colon | LOST KO |
| 1922-11-12 | Kid Martin | WWWWLW | Colon Stadium, Colon | LOST Technical knockout |
| 1922-05-21 | San Blas Kid | DWL | Colon City | LOST Points |
| 1918-02-12 | Mickey Harrison | WWLDLL | Broadway Theater, Colon | LOST Points |
| 1916-12-10 | Benny McGovern | DWLWWL | Santa Ana Plaza, Panama City | LOST Points |
| 1916-04-10 | Young Sam Langford | WLLLDD | Pacific Theater, Panama City | DRAW Points |
| 1916-03-11 | Young Sam Langford | LLWLLL | Pacific Theater, Panama City | DRAW Points |
| 1915-01-31 | Demarara Red | debut | Star Theater, Colon | DRAW Points |
| 1915-01-30 | Young Jeff Clark | D | Garden Theater, Colon | WIN Technical knockout |
| 1915-01-23 | Kid Henry | debut | Garden Theater, Colon | LOST Points |
| 1915-01-17 | Young Jeff Clark | debut | Garden Theater, Colon | DRAW Points |
| 1911-08-28 | Jimmy Brennan | WLDDDL | Keystone A.C., Philadelphia | DRAW |