Stadium: Court 3 Round: 44 Ground: Hardcourt outdoor
| ITF M15 - Hongkong | 2020/01/08 09:30 | Makoto Ochi v Ken Onishi | 7-6,6-2 |
| ITF M15 - Hongkong | 2020/01/07 04:45 | Kousuke Ogura v Ken Onishi | 5-7,4-6 |
| ITF M15 - Hongkong | 2020/01/06 02:00 | Shohei Chikami v Ken Onishi | 4-6,1-6 |
| ITF M15 - Te Anau | 2019/12/30 23:00 | Elliot Benchetrit v Ken Onishi | 7-5,6-1 |
| Challenger - Kobe | 2019/11/06 01:30 | Luke Saville v Ken Onishi | 6-2,6-2 |
| ITF M25 Taipei | 2019/07/22 04:00 | Han-Chih Lin v Ken Onishi | 6-7,6-3,10-6 |
| ITF M25 Taipei | 2019/07/15 02:00 | Hao-Hsiang Liao v Ken Onishi | 7-6,7-6 |
| ITF M15 Gimcheon | 2019/06/17 05:20 | Ju-Hae Moon v Ken Onishi | 2-6,6-3,10-6 |
| ITF - M15 Sharm-el-Sheikh | 2020/02/12 10:45 | Artem Zharkov v Arvid Nordquist | 0-6,0-6 |
| ITF - M15 Sharm-el-Sheikh | 2020/02/02 08:00 | Sergo Sikharulidze v Artem Zharkov | 6-3,6-1 |
| ITF M15 - Kazan | 2020/01/20 08:30 | Artem Zharkov v Leonid Sheyngezikht | 1-6,1-6 |
| ITF - M15 Sharm-el-Sheikh | 2019/10/13 10:00 | Daniele Catini v Artem Zharkov | 6-2,6-3 |
| ITF - M15 Sharm-el-Sheikh | 2019/10/06 14:30 | Tomas Papik v Artem Zharkov | 6-1,6-1 |
| ITF - M15 Sharm-el-Sheikh | 2019/09/29 09:00 | Artem Zharkov v Ofer Hacohen | 6-3,4-6,10-12 |
| ITF - M15 Şımkent | 2019/09/16 05:50 | Artem Zharkov v Grigoriy Korobeynikov | 1-6,6-4,7-10 |
| ITF - M15 Şımkent | 2019/09/09 04:00 | Leonid Sheyngezikht v Artem Zharkov | 6-2,6-3 |