Stadium: Centre Court Round: 25 Ground: Hardcourt outdoor
| ITF M25 Kalaburagi | 2023/12/01 04:00 | David Pichler v Seita Watanabe | 6-2,6-0 |
| ITF M25 Kalaburagi | 2023/11/30 07:45 | Seita Watanabe v Rishi Reddy | 6-2,6-3 |
| ITF M25 Mumbai | 2023/11/22 03:30 | Seita Watanabe v Louis Wessels | 4-6,5-7 |
| ITF M25 Takasaki | 2023/09/20 01:00 | Naoki Nakagawa v Seita Watanabe | 6-3,6-2 |
| ITF M25 Takasaki | 2023/09/18 03:30 | Mitsuki Wei Kang Leong v Seita Watanabe | 4-6,4-6 |
| ITF M25 Sapporo | 2023/09/15 00:55 | Naoki Nakagawa v Seita Watanabe | 6-3,6-2 |
| ITF M25 Sapporo | 2023/09/13 03:00 | Seita Watanabe v Yuta Kikuchi | 6-1,6-3 |
| ITF M25 Sapporo | 2023/09/06 03:35 | Seita Watanabe v Tatsuma Ito | 6-4,4-6,4-6 |
| ITF M15 Kuala Lumpur | 2023/11/29 03:00 | Andrea Bacaloni v Hayato Matsuoka | 6-4,7-5 |
| ITF M15 Ipoh Perak | 2023/11/24 02:00 | Takuya Kumasaka v Hayato Matsuoka | 7-6,6-0 |
| ITF M15 Ipoh Perak | 2023/11/23 05:25 | Hayato Matsuoka v Fitriadi M Rifqi | 6-4,6-2 |
| ITF M15 Ipoh Perak | 2023/11/23 01:00 | Tanguy Genier v Hayato Matsuoka | 5-7,2-6 |
| ITF M15 Kuching | 2023/11/15 02:00 | Hayato Matsuoka v Luca Castelnuovo | 6-4,3-6,4-6 |
| ITF M25 Takasaki | 2023/09/20 04:00 | Hayato Matsuoka v Collin Altamirano | 7-5,4-6,2-6 |
| ITF M25 Takasaki | 2023/09/18 02:40 | Hayato Matsuoka v Azuma Visaya | 6-4,5-7,10-5 |
| ITF M25 Takasaki | 2023/09/17 05:00 | Hayato Matsuoka v Ren Nakamura | 6-1,7-5 |