| Mark Chamberlain | Pierce O'Leary | |
|---|---|---|
| Record | 18-1-1 | 19-1-0 |
| Wins by KO | 13 | 11 |
| KO rate | 72% | 58% |
| Age | 27 | 26 |
| Height | — | 173 cm |
| Stance | Southpaw | Orthodox |
| Division | Super Lightweight | Super Lightweight |
| Country | England | Ireland |
| Power Rating | 1318 | 1121 |
| Last fight | Aug 1, 2026 | Aug 1, 2026 |