Event · Nov 29, 2026 · Tokyo
Win probability by Cestus Power Rating: Riku Masuda 54%, Seiya Tsutsumi 46%.
| Riku Masuda | Seiya Tsutsumi | |
|---|---|---|
| Record | 11-1-0 | 13-0-3 |
| Wins by KO | 9 | 8 |
| KO rate | 82% | 62% |
| Age | 29 | 30 |
| Height | 169 cm | 166 cm |
| Reach | 175 cm | 164 cm |
| Stance | Southpaw | Orthodox |
| Division | Bantamweight | Bantamweight |
| Country | Japan | Japan |
| Power Rating | 1244 | 1215 |
| Last fight | Jul 20, 2026 | Dec 17, 2025 |