Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF - Heraklion M15 | 2020/03/04 09:55 | Hao Yuan Ng v Aristotelis Thanos | 3-6,1-6 |
| ITF - Heraklion M15 | 2020/03/03 08:30 | Andrea Del Federico v Hao Yuan Ng | 6-7,6-2,7-10 |
| ITF - Heraklion M15 | 2020/02/25 08:00 | Buvaysar Gadamauri v Hao Yuan Ng | 6-3,6-1 |
| ITF - Heraklion M15 | 2020/02/24 11:00 | Patrik Stepanic v Hao Yuan Ng | 2-6,3-6 |
| ITF - Heraklion M15 | 2020/02/16 11:00 | Valentin Guenther v Hao Yuan Ng | 6-2,6-0 |
| ITF - Heraklion M15 | 2020/02/11 09:30 | Hao Yuan Ng v Alibek Kachmazov | 5-7,1-6 |
| ITF - Nonthaburi M25 | 2020/02/02 06:10 | Hao Yuan Ng v Jirat Navasirisomboon | 3-6,5-7 |
| ITF - Hongkong M15 | 2020/01/06 02:00 | Ching Lam v Hao Yuan Ng | 6-4,7-5 |
| ITF - Jakarta M15 | 2023/01/19 02:30 | Sanhui Shin v Keisuke Saitoh | 5-7,6-1,6-1 |
| ITF - Jakarta M15 | 2023/01/18 05:00 | Ray Ho v Keisuke Saitoh | 3-6,1-6 |
| 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 - Sapporo M25 | 2022/09/10 00:50 | Rio Noguchi v Keisuke Saitoh | 1-6,6-3,6-0 |
| ITF - Sapporo M25 | 2022/09/09 01:00 | Ryota Tanuma v Keisuke Saitoh | 6-0,4-6,3-6 |