Stadium: Centre Court Round: 26 Ground: Hardcourt outdoor
| ITF M15 Yanagawa | 2023/12/20 07:45 | Daisuke Sumizawa v Koki Matsuda | 5-7,3-6 |
| ITF M15 Yanagawa | 2023/12/20 02:30 | Koki Matsuda v Hong-Lin Fu | 6-4,6-4 |
| ITF M15 Yanagawa | 2023/12/18 01:00 | Koki Matsuda v Kai-I Wang | 6-4,7-6 |
| Challenger Yokkaichi | 2023/11/26 01:00 | Koki Matsuda v James Trotter | 1-6,1-6 |
| ITF M25 Mumbai | 2023/11/22 07:15 | Aryan Shah v Koki Matsuda | 6-3,7-5 |
| ITF M25 Hua Hin | 2023/11/16 03:00 | Koki Matsuda v Jie Cui | 6-2,2-6,2-6 |
| ITF M25 Hua Hin | 2023/11/15 02:50 | Koki Matsuda v Krittin Koaykul | 6-2,7-5 |
| Challenger Playford | 2023/10/23 02:25 | Jayden Court v Koki Matsuda | 7-5,7-6 |
| ITF M15 Yanagawa | 2023/12/21 00:30 | Shu Muto v Jumpei Yamasaki | 0-6,2-6 |
| ITF M25 Gold Coast | 2023/11/30 01:15 | Kody Pearson v Jumpei Yamasaki | 7-6,7-6 |
| ITF M25 Gold Coast | 2023/11/28 01:50 | Jumpei Yamasaki v Nam Hoang Ly | 2-6,6-4,6-3 |
| ITF M25 Brisbane | 2023/11/22 04:35 | Makoto Ochi v Jumpei Yamasaki | 7-6,6-3 |
| ITF M15 Kuching | 2023/11/16 05:35 | Hikaru Shiraishi v Jumpei Yamasaki | 7-5,6-1 |
| ITF M15 Kuching | 2023/11/15 04:20 | Jumpei Yamasaki v Thijmen Loof | 7-6,7-6 |
| ITF M25 Takasaki | 2023/09/20 04:20 | Jumpei Yamasaki v Sora Fukuda | 1-6,6-2,4-6 |
| ITF M25 Sapporo | 2023/09/15 03:30 | Shuichi Sekiguchi v Jumpei Yamasaki | 6-3,7-5 |