Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| Challenger Yokkaichi | 2022/11/22 02:20 | Keisuke Saitoh v Shintaro Imai | 4-6,0-6 |
| Challenger Kobe | 2022/11/13 02:10 | Keisuke Saitoh v Jason Jung | 6-4,3-6,3-6 |
| Challenger Matsuyama | 2022/11/06 03:30 | Mukund Sasikumar v Keisuke Saitoh | 6-3,6-2 |
| Challenger Yokohama | 2022/10/31 01:30 | Seong Chan Hong v Keisuke Saitoh | 6-2,7-5 |
| ITF M25 Sapporo | 2022/09/10 00:50 | Rio Noguchi v Keisuke Saitoh | 1-6,6-3,6-0 |
| ITF M25 Sapporo | 2022/09/09 01:00 | Ryota Tanuma v Keisuke Saitoh | 6-0,4-6,3-6 |
| ITF M25 Sapporo | 2022/09/08 03:20 | Keisuke Saitoh v Shunsuke Nakagawa | 6-1,6-2 |
| ITF M25 Sapporo | 2022/09/07 00:30 | Kazuki Nishiwaki v Keisuke Saitoh | 3-6,2-6 |
| ITF M25 Heraklion | 2022/11/22 10:50 | Ioannis Xilas v Alexandros Skorilas | 4-6,1-6 |
| UTR Pro Athens | 2022/08/12 08:00 | Ioannis Xilas v Jerome Iaconi | 6-2,1-6,6-3 |
| UTR Pro Athens | 2022/08/10 06:30 | Ioannis Xilas v Ammar Elamin | 6-3,6-3 |
| UTR Pro Athens | 2022/08/09 06:30 | Ioannis Xilas v Edoardo Bottino | 6-3,5-1 |
| UTR Pro Athens | 2022/08/08 08:00 | Noah Berry v Ioannis Xilas | 6-2,6-3 |
| UTR Pro Athens | 2022/08/07 08:00 | Aristotelis Thanos v Ioannis Xilas | 6-2,6-4 |
| UTR Pro Athens | 2022/08/06 08:00 | Ioannis Xilas v Rayane Oumaouche | 6-4,6-2 |
| UTR Pro Athens | 2022/08/04 05:00 | Ioannis Xilas v Sergis Kyratzis | 6-2,6-1 |