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“Young Philadelphia Jack O'Brien”
60-22-18 (60 wins, 22 losses, 18 draws) · 6 KO · Boxing · Welterweight · USA
| Result | Opponent | Method | Round | Date |
|---|---|---|---|---|
| Win | Young Erne | NWS | 6 | Jun 23, 1916 |
| Loss | Ted "Kid" Lewis | NWS | 6 | Dec 25, 1914 |
| Loss | Ad Wolgast | NWS | 6 | May 31, 1912 |
| Loss | Young Erne | NWS | 6 | Mar 29, 1912 |