Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2023/09/12 03:45 | Keisuke Saitoh v Tomohiro Masabayashi | 5-7,3-6 |
| ITF M25 Sapporo | 2023/09/06 01:00 | Keisuke Saitoh v Tomohiro Masabayashi | 4-6,6-3,1-6 |
| ITF M25 Taipei | 2024/07/29 02:00 | Keisuke Saitoh v Chen-Yu Lu | 6-3,6-0 |
| ITF M15 Tokyo | 2024/07/02 04:40 | Keisuke Saitoh v Kenta Miyoshi | 6-7,0-6 |
| ITF M25 Kursumlijska Banja | 2024/06/04 10:50 | Saba Purtseladze v Keisuke Saitoh | 6-3,6-4 |
| ITF M15 Kursumlijska Banja | 2024/05/28 09:30 | Yanaki Milev v Keisuke Saitoh | 6-2,6-4 |
| ITF M15 Kursumlijska Banja | 2024/05/23 11:55 | Hayato Matsuoka v Keisuke Saitoh | 6-4,6-4 |
| ITF M15 Kursumlijska Banja | 2024/05/22 07:00 | Milos Mikovic v Keisuke Saitoh | 1-6,0-6 |
| ITF M15 Kursumlijska Banja | 2024/05/17 07:00 | Keisuke Saitoh v Edas Butvilas | 6-7,6-3,2-6 |
| ITF M15 Kursumlijska Banja | 2024/05/16 07:00 | Keisuke Saitoh v Ignacio Parisca | 7-6,6-1 |
| ITF M25 Taipei | 2024/07/29 02:00 | Tomohiro Masabayashi v Hugo Pierre | 6-2,6-4 |
| ITF M15 Tokyo | 2024/07/08 01:00 | Tomohiro Masabayashi v Yuta Tomida | 5-7,7-6,10-2 |
| ITF M15 Tokyo | 2024/07/03 06:30 | Tomohiro Masabayashi v Makoto Ochi | 5-7,5-7 |
| ITF M15 Hong Kong | 2024/06/22 01:55 | Tomohiro Masabayashi v Jake Delaney | 4-6,3-6 |
| ITF M15 Hong Kong | 2024/06/20 02:00 | Tomohiro Masabayashi v Kazuki Nishiwaki | 7-5,6-1 |
| ITF M15 Hong Kong | 2024/06/19 07:40 | Tomohiro Masabayashi v James Van Herzeele | 6-3,6-1 |
| ITF M15 Hong Kong | 2024/06/14 06:00 | Ajeet Rai v Tomohiro Masabayashi | 7-5,6-0 |
| ITF M15 Hong Kong | 2024/06/13 03:55 | Tomohiro Masabayashi v Nam Hoang Ly | 6-4,2-6,6-4 |