Stadium: Court 8 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Yanagawa | 2023/12/29 01:00 | Keisuke Saitoh v Duckhee Lee | 3-6,5-7 |
| ITF M15 Yanagawa | 2023/12/28 01:00 | Mikalai Haliak v Keisuke Saitoh | 4-6,3-6 |
| ITF M15 Yanagawa | 2023/12/27 00:30 | Keisuke Saitoh v Taki Adachi | 6-1,6-1 |
| ITF M15 Yanagawa | 2023/12/20 07:15 | Linang Xiao v Keisuke Saitoh | 6-0,6-2 |
| ITF M25 Gold Coast | 2023/11/29 01:30 | Keisuke Saitoh v Blake Mott | 2-6,2-6 |
| ITF M25 Brisbane | 2023/11/22 23:50 | Moerani Bouzige v Keisuke Saitoh | 6-4,2-6,7-5 |
| ITF M25 Brisbane | 2023/11/21 05:25 | Keisuke Saitoh v Thomas Fancutt | 4-6,7-5,6-4 |
| ITF M25 Takasaki | 2023/09/20 01:00 | Leo Vithoontien v Keisuke Saitoh | 6-4,6-3 |
| ITF M15 Monastir | 2024/01/01 09:00 | Leon Formella v Geni Inoue | 4-6,2-6 |
| ITF M15 Monastir | 2023/12/31 10:00 | Leon Formella v Dmitrii Vasilev | 6-7,6-3,10-6 |
| ITF M15 Monastir | 2023/12/24 08:00 | William Jucha v Leon Formella | 6-3,6-3 |
| ITF M15 Monastir | 2023/12/20 08:00 | Nazim Makhlouf v Leon Formella | 6-2,6-0 |
| ITF M15 Monastir | 2023/12/18 12:15 | RunYu Zhao v Leon Formella | 1-6,2-6 |
| ITF M15 Monastir | 2023/12/10 11:00 | Maxence Bertimon v Leon Formella | 6-4,7-5 |
| ITF M15 Monastir | 2023/12/03 10:30 | Leon Formella v Mark Wallner | 0-6,6-7 |
| ITF M15 Monastir | 2023/11/26 08:00 | Stefan Peter Hampe v Leon Formella | 6-3,6-3 |