Stadium: Court 3 Round: 44 Ground: Hardcourt outdoor
| Hong Kong, Simples M-ITF-HKG-01A | 2020/01/08 09:30 | Makoto Ochi v Onishi, Ken | 7-6,6-2 |
| Hong Kong, Simples M-ITF-HKG-01A | 2020/01/07 04:45 | Kousuke Ogura v Onishi, Ken | 5-7,4-6 |
| Hong Kong, Simples M-ITF-HKG-01A | 2020/01/06 02:00 | Shohei Chikami v Onishi, Ken | 4-6,1-6 |
| Te Anau, Simples M-ITF-NZL-01A | 2019/12/30 23:00 | Elliot Benchetrit v Onishi, Ken | 7-5,6-1 |
| Challenger Kobe | 2019/11/06 01:30 | Luke Saville v Onishi, Ken | 6-2,6-2 |
| Taipei, Singles M-ITF-TPE-01A | 2019/07/22 04:00 | Lin, Han-Chih v Onishi, Ken | 6-7,6-3,10-6 |
| Taipei, Singles M-ITF-TPE-01A | 2019/07/15 02:00 | Liao, Hao-Hsiang v Onishi, Ken | 7-6,7-6 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/17 05:20 | Moon, Ju-Hae v Onishi, Ken | 2-6,6-3,10-6 |
| ITF - M15 Sharm El Sheikh | 2020/02/12 10:45 | Zharkov, Artem v Arvid Nordquist | 0-6,0-6 |
| ITF - M15 Sharm El Sheikh | 2020/02/02 08:00 | Sergo Sikharulidze v Zharkov, Artem | 6-3,6-1 |
| ITF M15 Kazan | 2020/01/20 08:30 | Zharkov, Artem v Leonid Sheyngezikht | 1-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2019/10/13 10:00 | Catini, Daniele v Zharkov, Artem | 6-2,6-3 |
| ITF - M15 Sharm El Sheikh | 2019/10/06 14:30 | Papik, Tomas v Zharkov, Artem | 6-1,6-1 |
| ITF - M15 Sharm El Sheikh | 2019/09/29 09:00 | Zharkov, Artem v Hacohen, Ofer | 6-3,4-6,10-12 |
| ITF - M15 Shymkent | 2019/09/16 05:50 | Zharkov, Artem v Korobeynikov, Grigoriy | 1-6,6-4,7-10 |
| ITF - M15 Shymkent | 2019/09/09 04:00 | Leonid Sheyngezikht v Zharkov, Artem | 6-2,6-3 |