Face à face
| Australian Open | 2022/11/17 03:00 | Koki Watanabe v Kenta Nishimoto | W | 2-0 |
Home History
| Korea Open | 2023/07/19 08:10 | Chico Aura Dwi Wardoyo v Koki Watanabe | W | 1-2 |
| Canada Open | 2023/07/07 21:20 | Koki Watanabe v Li, S. F. | L | 1-2 |
| Canada Open | 2023/07/06 18:10 | Arnaud Merkle v Koki Watanabe | W | 1-2 |
| Canada Open | 2023/07/05 16:10 | Nhat Nguyen v Koki Watanabe | W | 0-2 |
| Orléans Masters | 2023/04/06 16:00 | Jun Hao Leong v Koki Watanabe | L | 2-0 |
| Orléans Masters | 2023/04/05 15:40 | Koki Watanabe v Kanta Tsuneyama | W | 2-1 |
| Masters d'Espagne | 2023/03/31 12:25 | Koki Watanabe v Anders Antonsen | L | 0-2 |
| Masters d'Espagne | 2023/03/30 09:30 | Christo Popov v Koki Watanabe | W | 0-2 |
Away History
| Korea Open | 2023/07/19 07:05 | Pyeong Gang Choi v Kenta Nishimoto | W | 0-2 |
| Canada Open | 2023/07/08 22:35 | Kenta Nishimoto v Lakshya Sen | L | 0-2 |
| Canada Open | 2023/07/07 20:25 | Magnus Johannesen v Kenta Nishimoto | W | 1-2 |
| Canada Open | 2023/07/06 23:45 | Yu Jen Chi v Kenta Nishimoto | W | 1-2 |
| Canada Open | 2023/07/05 23:20 | Su, L. Y. v Kenta Nishimoto | W | 0-2 |
| Taipei Open | 2023/06/23 08:15 | Chico Aura Dwi Wardoyo v Kenta Nishimoto | L | 2-0 |
| Taipei Open | 2023/06/22 07:40 | Yin Chak Chan v Kenta Nishimoto | W | 0-2 |
| Taipei Open | 2023/06/21 08:40 | Sholeh Aidil v Kenta Nishimoto | W | 0-2 |