Stadium: Court 2 Round: 26 Ground: Clay
| ITF M15 Jakarta | 2023/01/19 02:30 | Sanhui Shin v Keisuke Saitoh | 5-7,6-1,6-1 |
| ITF M15 Karuizawa | 2023/05/30 08:10 | Keisuke Saitoh v Asahi Harazaki | 7-6,6-1 |
| Challenger Busan | 2023/05/08 02:00 | Keisuke Saitoh v Luke Saville | 3-6,1-6 |
| Challenger Gwangju | 2023/04/30 01:30 | Omar Jasika v Keisuke Saitoh | 6-0,6-0 |
| Challenger Seoul | 2023/04/23 06:00 | Omar Jasika v Keisuke Saitoh | 6-4,7-6 |
| ITF M25 Kashiwa | 2023/04/04 01:00 | Keisuke Saitoh v Yusuke Takahashi | 4-6,6-3,3-6 |
| ITF M25 Tsukuba | 2023/03/28 07:55 | Tatsuma Ito v Keisuke Saitoh | 4-6,7-5,6-2 |
| ITF M25 Canberra | 2023/03/24 03:30 | Keisuke Saitoh v Tristan Schoolkate | 2-6,4-6 |
| ITF M25 Canberra | 2023/03/23 22:30 | Keisuke Saitoh v Jake Delaney | 6-4,0-6,6-4 |
| ITF M15 Karuizawa | 2023/05/30 03:30 | Issei Okamura v Sanhui Shin | 6-3,2-6,1-6 |
| Challenger Gwangju | 2023/05/02 04:25 | Bu Yunchaokete v Sanhui Shin | 6-4,6-1 |
| Challenger Seoul | 2023/04/23 03:40 | Sanhui Shin v Dayne Kelly | 2-6,2-6 |
| ITF M25 Jakarta | 2023/04/18 02:15 | Makoto Ochi v Sanhui Shin | 6-2,6-1 |
| ITF M25 Jakarta | 2023/04/17 03:35 | Raphael D P Paska v Sanhui Shin | 0-6,1-6 |
| ITF M25 Jakarta | 2023/04/12 07:00 | Sanhui Shin v Evgeny Donskoy | 2-6,3-6 |
| ITF M25 Jakarta | 2023/04/11 04:05 | Yeongseok Jeong v Sanhui Shin | 6-4,3-6,8-10 |
| ITF M25 Jakarta | 2023/04/10 06:00 | Putu Agassi Pranata Nida v Sanhui Shin | 1-6,1-6 |