Stadium: Court 1 Round: 25 Ground: Clay
| 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 |
| ITF M25 Monastir | 2022/01/23 12:30 | Linghao Zhang v Keisuke Saitoh | 3-6,3-6 |