Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Jakarta | 2023/06/27 05:00 | Koki Matsuda v Issei Okamura | 6-3,7-6 |
| ITF M25 Kashiwa | 2023/04/03 01:00 | Koki Matsuda v Issei Okamura | 1-6,2-6 |
| ITF M15 Yanagawa | 2023/12/27 02:15 | Koki Matsuda v Sora Fukuda | 2-6,6-1,2-6 |
| ITF M15 Yanagawa | 2023/12/21 08:45 | Koki Matsuda v Jumpei Yamasaki | 1-6,6-1,3-6 |
| 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 Doha | 2024/01/17 13:05 | Issei Okamura v Ali Habib | 3-6,2-6 |
| ITF M25 Doha | 2024/01/16 12:00 | Saba Purtseladze v Issei Okamura | 4-6,5-7 |
| ITF M25 Doha | 2024/01/15 12:00 | Issei Okamura v Alberto Lim | 0-6,0-6 |
| ITF M25 Doha | 2024/01/14 16:25 | Issei Okamura v Ali Alshati | 6-2,6-0 |
| ITF M15 Doha | 2024/01/09 12:00 | Issei Okamura v Ammar Faleh Alhogbani | 6-7,2-6 |
| ITF M15 Yanagawa | 2023/12/25 00:30 | Issei Okamura v Jay Friend | 2-6,2-6 |
| ITF M15 Al Zahra | 2023/11/02 10:30 | Issei Okamura v Niklas Schell | 6-7,1-6 |
| ITF M15 Al Zahra | 2023/11/01 11:30 | Ali Alshati v Issei Okamura | 3-6,1-6 |