Stadium: Court 14 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Takasaki | 2023/09/20 01:00 | Leo Vithoontien v Keisuke Saitoh | 6-4,6-3 |
| 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 Hong Kong | 2023/08/31 02:00 | Naoki Nakagawa v Keisuke Saitoh | 6-4,6-7,6-1 |
| ITF M25 Hong Kong | 2023/08/30 02:00 | Keisuke Saitoh v Ji Hoon Son | 6-3,7-6 |
| ITF M15 Caloundra | 2023/08/04 00:55 | Isaac Becroft v Keisuke Saitoh | 6-3,6-4 |
| ITF M15 Caloundra | 2023/08/03 00:50 | Tai Leonard Sach v Keisuke Saitoh | 2-6,1-6 |
| ITF M15 Caloundra | 2023/08/01 04:50 | Keisuke Saitoh v Edward Winter | 7-6,6-2 |
| Challenger Sydney | 2023/10/28 23:00 | Thomas Fancutt v Matthew Romios | 1-6,3-6 |
| Challenger Playford | 2023/10/23 00:55 | Thomas Fancutt v Ji Sung Nam | 6-2,2-6,5-7 |
| Challenger Playford | 2023/10/22 03:15 | Thomas Fancutt v Alexander Klintcharov | 6-4,6-2 |
| ITF M25 Darwin | 2023/09/21 05:30 | Jayden Court v Thomas Fancutt | 7-6,7-6 |
| ITF M25 Darwin | 2023/09/20 07:20 | Tai Leonard Sach v Thomas Fancutt | 5-7,7-6,4-6 |
| ITF M25 Darwin | 2023/09/12 09:55 | Jeremy Beale v Thomas Fancutt | 7-6,6-2 |
| UTR Pro Carrara | 2023/08/19 02:30 | Scott Jones v Thomas Fancutt | 4-6,4-6 |
| UTR Pro Carrara | 2023/08/17 23:00 | Marcus Schoeman v Thomas Fancutt | 3-6,1-6 |