Johnny O'Brien boxeur
- combats
- 7
- gagnés
- 1
- perdus
- 5
- match nul
- 1
- Situation
- inactive
- Division
- lightweight
- Début
- 1916-04-06
- Taille
- -
- Allonge
- -
- âge
- -
- Né
- -
- Décès
- -
- Nationalité
- USA
| Date | Adversaire | Derniers résultats des adversaires | Lieu | Result |
|---|---|---|---|---|
| 1921-01-04 | Young Donahue | LWWWWL | Mechanics Building, Boston | LOST Points |
| 1920-09-21 | Tommy Nee | WWLLDW | Mechanics Building, Boston | LOST Points |
| 1918-12-23 | Young Marka | debut | Central A.C., Boston | LOST Points |
| 1916-08-08 | Al Gerard | LW | Armory A.A., Boston | LOST KO |
| 1916-08-04 | J. Campi | debut | Commercial A.C., Boston | WIN Points |
| 1916-07-21 | Louis Leonard | debut | Commercial A.C., Boston | DRAW Points |
| 1916-04-06 | Teddy Murphy | WWLWWW | Academy of Music, Lowell | LOST Points |