Stadium: Court 13 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Kashiwa | 2019/04/04 01:00 | Yusuke Takahashi v Keisuke Saitoh | 6-2,6-1 |
| ITF M25 Bendigo | 2022/03/02 04:55 | Yusuke Takahashi v Kento Takeuchi | 7-6,6-3 |
| ITF M25 Portimao | 2021/10/27 12:20 | Yusuke Takahashi v Maximilian Neuchrist | 2-6,4-6 |
| ITF M25 Quinta Do Lago | 2021/10/20 09:00 | Kaichi Uchida v Yusuke Takahashi | 6-4,6-2 |
| ITF M25 Loule | 2021/10/15 09:30 | Yusuke Takahashi v Lucas Gerch | 1-6,0-6 |
| ITF M25 Loule | 2021/10/14 10:55 | Roberto Ortega-Olmedo v Yusuke Takahashi | 7-6,4-6,4-6 |
| ITF M25 Loule | 2021/10/13 14:05 | Yusuke Takahashi v Alberto Barroso Campos | 2-6,6-1,6-4 |
| ITF M25 Setubal | 2021/10/08 12:15 | Yusuke Takahashi v Laurent Lokoli | 2-6,6-2,0-6 |
| ITF M25 Setubal | 2021/10/07 13:55 | Yusuke Takahashi v Alberto Barroso Campos | 6-4,6-3 |
| ITF M25 Canberra | 2022/02/17 00:40 | Dane Sweeny v Keisuke Saitoh | 6-3,6-4 |
| ITF M25 Canberra | 2022/02/14 23:00 | Jordan Smith v Keisuke Saitoh | 2-6,6-3,5-7 |
| ITF M25 Monastir | 2022/01/31 09:00 | Shinji Hazawa v Keisuke Saitoh | 6-1,6-3 |
| ITF M25 Monastir | 2022/01/30 12:30 | Keisuke Saitoh v Charlelie Cosnet | 1-6,6-1,10-6 |
| ITF M25 Monastir | 2022/01/28 08:30 | Filip Misolic v Keisuke Saitoh | 6-1,6-4 |
| ITF M25 Monastir | 2022/01/27 08:30 | Keisuke Saitoh v Harold Mayot | 6-4,6-4 |
| ITF M25 Monastir | 2022/01/26 13:10 | Aziz Ouakaa v Keisuke Saitoh | 6-4,5-7,5-7 |
| ITF M25 Monastir | 2022/01/24 13:55 | Florent Bax v Keisuke Saitoh | 2-6,3-6 |