| ITF M15 Kashiwa | 2024/04/01 06:00 | Leo Vithoontien v Masamichi Imamura | 5-7,6-7 |
| ITF M25 Sapporo | 2025/09/12 01:00 | Renta Tokuda v Masamichi Imamura | 7-5,6-1 |
| ITF M25 Sapporo | 2025/09/11 03:45 | Sora Fukuda v Masamichi Imamura | 3-6,6-7 |
| ITF M25 Sapporo | 2025/09/10 02:30 | Keisuke Saitoh v Masamichi Imamura | 3-6,3-5 |
| Challenger Shanghai | 2025/09/01 07:30 | Kasidit Samrej v Masamichi Imamura | 6-7,6-2,6-4 |
| Challenger Shanghai | 2025/08/31 03:25 | Hanyi Liu v Masamichi Imamura | 4-6,1-6 |
| Challenger Zhangjiagang | 2025/08/26 07:00 | Masamichi Imamura v Oliver Crawford | 3-6,2-6 |
| ITF M25 Taipei | 2025/08/23 02:00 | Dane Sweeny v Masamichi Imamura | 6-3,5-3 |
| ITF M25 Taipei | 2025/08/22 02:00 | Ajeet Rai v Masamichi Imamura | 2-6,7-5,4-6 |
| ITF M25 Sapporo | 2025/09/09 01:00 | Hayato Matsuoka v Leo Vithoontien | 6-2,6-4 |
| ITF M25 Nakhon Pathom | 2025/09/05 02:00 | Mukund Sasikumar v Leo Vithoontien | 6-0,6-4 |
| ITF M25 Nakhon Pathom | 2025/09/04 02:00 | Jirat Navasirisomboon v Leo Vithoontien | 3-6,2-6 |
| ITF M25 Nakhon Pathom | 2025/09/03 02:00 | Khomtat Kitthachok v Leo Vithoontien | 0-6,3-6 |
| ITF M15 Nakhon Pathom | 2025/08/29 02:00 | Leo Vithoontien v Fitriadi M Rifqi | 6-4,4-6,4-6 |
| ITF M15 Nakhon Pathom | 2025/08/28 02:00 | Leo Vithoontien v Yuta Tomida | 6-2,3-6,5-2 |
| ITF M15 Nakhon Pathom | 2025/08/26 02:00 | Leo Vithoontien v Noppadol Noikor | 6-3,6-2 |
| ITF M15 Huntsville | 2025/08/13 22:31 | Ryan Dickerson v Leo Vithoontien | 6-4,5-4 |