| Denmark Open | 10/18 06:00 | - | H.S. Prannoy v Koki Watanabe | - | Cancelled | |
| Arctic Open | 10/13 17:50 | 3 | Anders Antonsen v Koki Watanabe | L | 2-1 | |
| Arctic Open | 10/12 17:00 | 4 | Nhat Nguyen v Koki Watanabe | W | 0-2 | |
| Arctic Open | 10/11 12:20 | 5 | Tzu Wei Wang v Koki Watanabe | W | 1-2 | |
| Vietnam Open | 09/15 08:30 | 3 | Koki Watanabe v Yu Kai Huang | L | 0-2 | |
| Vietnam Open | 09/14 10:15 | 4 | Koki Watanabe v Duc Phat Le | W | 2-0 | |
| Vietnam Open | 09/13 08:00 | 5 | Koki Watanabe v Keisuke Fujiwara | W | 2-0 | |
| Indonesia Masters | 09/07 03:00 | 4 | Koki Watanabe v Sholeh Aidil | L | 0-2 | |
| Indonesia Masters | 09/06 09:35 | 5 | Koki Watanabe v Kuan Lin Kuo | W | 2-0 | |
| Japan Open | 07/28 04:25 | 3 | Koki Watanabe v Lakshya Sen | L | 0-2 | |
| Japan Open | 07/27 03:50 | 4 | Koki Watanabe v Tze Yong Ng | W | 2-0 | |
| Japan Open | 07/26 05:30 | 5 | Kento Momota v Koki Watanabe | W | 1-2 | |
| Korea Open | 07/20 07:05 | 4 | Koki Watanabe v Kenta Nishimoto | L | 0-2 | |
| Korea Open | 07/19 08:10 | 5 | Chico Aura Dwi Wardoyo v Koki Watanabe | W | 1-2 | |
| Canada Open | 07/07 21:20 | 3 | Koki Watanabe v Shi Feng Li | L | 1-2 | |
| Canada Open | 07/06 18:10 | 4 | Arnaud Merkle v Koki Watanabe | W | 1-2 | |
| Canada Open | 07/05 16:10 | 5 | Nhat Nguyen v Koki Watanabe | W | 0-2 | |
| Orleans Masters | 04/06 16:00 | 4 | Jun Hao Leong v Koki Watanabe | L | 2-0 | |
| Orleans Masters | 04/05 15:40 | 5 | Koki Watanabe v Kanta Tsuneyama | W | 2-1 | |
| Španielsko - Masters | 03/31 12:25 | 3 | Koki Watanabe v Anders Antonsen | L | 0-2 | |
| Španielsko - Masters | 03/30 09:30 | 4 | Christo Popov v Koki Watanabe | W | 0-2 | |
| Španielsko - Masters | 03/29 15:15 | 5 | Koki Watanabe v Tzu Wei Wang | W | 2-1 | |
| Swiss Open | 03/26 12:40 | 1 | Tien Chen Chou v Koki Watanabe | W | 1-2 | |
| Swiss Open | 03/25 17:30 | 2 | Koki Watanabe v Zii Jia Lee | W | 2-0 | |
| Swiss Open | 03/24 13:00 | 3 | Cheuk Yiu Lee v Koki Watanabe | W | 0-2 | |
| Swiss Open | 03/23 14:15 | 4 | Toma Junior Popov v Koki Watanabe | W | 1-2 | |
| Swiss Open | 03/22 13:40 | 5 | Sitthikom Thammasin v Koki Watanabe | W | 0-2 | |
| Thailand Masters | 02/02 06:00 | 4 | Koki Watanabe v Yu Qi Shi | L | 1-2 | |
| Thailand Masters | 02/01 03:00 | 5 | Brian Yang v Koki Watanabe | W | 0-2 | |
| Indonesian Masters - kvalifikácia | 01/24 01:20 | - | Koki Watanabe v June Wei Cheam | L | 1-2 |