Roger O'Brien boxer
- bouts
- 19
- won
- 7
- lost
- 11
- draw
- 1
- Status
- inactive
- Division
- welterweight
- Debut
- 1926-11-29
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1930-04-25 | Joe Potts | L | Moose Lodge, Pittsburgh | WIN Technical knockout |
| 1930-04-18 | Frankie Portland | WLW | Moose Lodge, Pittsburgh | LOST Technical knockout |
| 1929-07-09 | Jimmy Murphy | LDWW | Logan Square Baseball Park, Chicago | LOST Technical knockout |
| 1929-06-28 | Harry Schuman | DWWD | Mills Stadium, Chicago | LOST Points |
| 1928-12-28 | Tommy Bambrough | LWLW | Coliseum, Chicago | DRAW Points |
| 1928-12-04 | Iowa Joe Rivers | WLWWDW | Hippodrome, Chicago | LOST Technical knockout |
| 1928-09-20 | Ray Bowen | WWLWLW | Mills Stadium, Chicago | LOST Points |
| 1928-07-26 | Jackie London | WWLWWW | Mills Stadium, Chicago | WIN KO |
| 1928-07-09 | Ted Henry | WWWWLL | Midway Gardens, Chicago | LOST Points |
| 1928-07-05 | Ralph Mendoza | WLWDLL | Mills Stadium, Chicago | LOST |
| 1928-06-08 | Joe Patrice | DWWWWL | Mills Stadium, Chicago | LOST Points |
| 1928-05-24 | Joe Patrice | LDWWWW | Mills Stadium, Chicago | WIN Technical knockout |
| 1928-05-07 | Walter Gale | debut | White City Arena, Chicago | WIN Technical knockout |
| 1928-02-27 | Hershie Wilson | DWLWWL | Coliseum, Chicago | LOST Points |
| 1928-01-30 | George Kerwin | debut | White City Arena, Chicago | LOST KO |
| 1928-01-16 | Young Tony Caponi | WWLLLW | White City Arena, Chicago | WIN Points |
| 1928-01-10 | Joey Thomas | WLWWWW | Coliseum, Chicago | LOST Points |
| 1926-12-10 | Johnny De Pirro | L | Eagles Hall, Chicago | WIN Points |
| 1926-11-29 | Dan Ferguson | LLLL | Madison Gardens, Chicago | WIN Points |