Ground: Hardcourt indoor
| ITF M15 Osaka | 2025/04/26 03:30 | Yusuke Takahashi v Koki Matsuda | 1-6,6-2,7-6 |
| ITF M15 Osaka | 2025/04/25 02:30 | Sora Fukuda v Koki Matsuda | 6-7,6-4,4-6 |
| ITF M15 Osaka | 2025/04/24 02:30 | Koki Matsuda v Daisuke Sumizawa | 3-6,6-4,7-6 |
| ITF M15 Osaka | 2025/04/23 02:00 | Saki Tange v Koki Matsuda | 2-6,4-6 |
| ITF M15 Osaka | 2025/04/21 02:30 | Koki Matsuda v Hien Q H Pham | 5-7,6-0,1-0 |
| ITF M15 Kashiwa | 2025/04/02 06:00 | Yu Hsiou Hsu v Koki Matsuda | 6-4,6-2 |
| ITF M15 Hinode | 2025/03/13 01:00 | Koki Matsuda v Steffan Van Weldam | 6-3,6-3 |
| ITF M15 Maanshan | 2025/03/05 02:00 | Koki Matsuda v Rigele Te | 6-7,4-6 |
| ITF M15 Andong | 2025/05/20 01:00 | Kousuke Ogura v Chase Ferguson | 4-6,1-6 |
| ITF M15 Osaka | 2025/04/23 03:30 | Daisuke Sumizawa v Kousuke Ogura | 6-1,5-7,7-6 |
| Challenger San Luis Potosi | 2025/04/13 19:10 | Kousuke Ogura v Mark Whitehouse | 2-6,2-6 |
| Challenger Mexico City | 2025/04/06 17:35 | Kousuke Ogura v Maximilian Neuchrist | 3-6,0-6 |
| Challenger Campinas | 2025/03/31 16:25 | Enzo Lima v Kousuke Ogura | 6-3,6-2 |
| Challenger Campinas | 2025/03/30 16:20 | Victor Braga v Kousuke Ogura | 4-6,3-6 |
| Challenger Concepcion | 2025/03/24 17:30 | Jose Pereira v Kousuke Ogura | 4-6,6-4,6-3 |
| Challenger Concepcion | 2025/03/23 18:40 | Arklon H D Pino v Kousuke Ogura | 1-6,5-7 |