Stadium: Court 7 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Hinode | 2024/03/10 03:00 | Keisuke Saitoh v Yusuke Kusuhara | 7-6,3-6,10-8 |
| ITF M15 Monastir | 2024/02/22 09:00 | Adrien Gobat v Keisuke Saitoh | 6-4,7-5 |
| ITF M15 Monastir | 2024/02/20 10:50 | Keisuke Saitoh v Louis Tessa | 6-3,6-1 |
| ITF M15 Monastir | 2024/02/07 08:30 | Luca Castagnola v Keisuke Saitoh | 4-6,6-1,7-5 |
| ITF M15 Monastir | 2024/02/05 14:10 | Keisuke Saitoh v Nazim Makhlouf | 6-4,6-3 |
| ITF M15 Monastir | 2024/02/05 09:30 | Keisuke Saitoh v Dimitris Sakellaridis | 6-2,7-5 |
| ITF M15 Monastir | 2024/01/25 08:30 | Keisuke Saitoh v Andres F Canovas | 4-6,1-6 |
| ITF M15 Monastir | 2024/01/24 11:45 | Yan Bai v Keisuke Saitoh | 4-6,6-3,1-6 |
| ITF M15 Hinode | 2024/03/10 05:00 | Kenta Nakamura v Ryoto Tachi | 1-6,2-6 |
| UTR Pro Kawaguchi | 2024/03/09 05:15 | Hiiro Sakamoto v Ryoto Tachi | 6-4,6-3 |
| UTR Pro Kawaguchi | 2024/03/07 03:08 | Ryoto Tachi v Rei Sato | 6-1,6-4 |
| UTR Pro Kawaguchi | 2024/03/06 23:30 | Ryoto Tachi v So Hanatani | 6-3,6-1 |
| UTR Pro Kawaguchi | 2024/03/04 08:00 | Ryoto Tachi v Yuya Hirose | 6-3,6-4 |
| UTR Pro Kawaguchi | 2024/03/04 02:40 | Ryoto Tachi v Ryotaro Matsumura | 2-6,3-5 |
| UTR Pro Kawaguchi | 2024/03/03 04:34 | Ryoto Tachi v Yuki Karatsu | 6-0,7-6 |
| UTR Pro Kawaguchi | 2024/03/02 04:03 | Ryoto Tachi v Yuya Hirose | 6-4,6-1 |