Round: 25 Ground: Clay
| ITF Hungary F1 | 2017/05/08 08:00 | Alexander Ovcharov v Paramveer Singh Bajwa | 7-5,6-3 |
| ITF Hungary F1 | 2017/05/07 08:00 | Alexander Ovcharov v Domen Gostincar | 7-6,6-0 |
| ITF Kazakhstan F5 | 2017/04/25 06:15 | Alexander Ovcharov v Roman Khassanov | 4-6,3-6 |
| ITF Kazakhstan F5 Qual | 2017/04/23 06:55 | Evgeny Danilov v Alexander Ovcharov | 2-6,1-6 |
| ITF Kazakhstan F4 Qual | 2017/04/16 06:35 | Yan Sabanin v Alexander Ovcharov | 6-1,6-2 |
| ITF Kazakhstan F4 Qual | 2017/04/15 08:00 | Alexander Ovcharov v Alexey Aleshchev | 6-4,6-0 |
| ITF Kazakhstan F3 Qual | 2017/04/10 07:35 | Dimitriy Voronin v Alexander Ovcharov | 3-6,7-5,6-2 |
| ITF Kazakhstan F3 Qual | 2017/04/09 08:00 | Dmitry Mnushkin v Alexander Ovcharov | 7-6,4-6,2-6 |
| ITF Hungary F1 | 2017/05/08 08:00 | Ken Onishi v Aljaz Radinski | 6-3,7-5 |
| ITF Japan F5 | 2017/04/03 06:20 | Ken Onishi v Ryota Tanuma | 6-7,2-6 |
| ITF Japan F4 | 2017/03/30 01:00 | Ken Onishi v Yosuke Watanuki | 2-6,5-7 |
| ITF Japan F4 | 2017/03/29 01:00 | Masaya Kobayashi v Ken Onishi | 4-6,6-7 |
| Challenger Bangkok 2 Qual | 2017/01/07 08:15 | Ken Onishi v Jimmy Wang | 1-6,4-6 |
| ITF Hong Kong F1 | 2017/01/05 02:00 | Ken Onishi v Takuto Niki | 4-6,1-6 |
| ITF Hong Kong F1 | 2017/01/04 04:50 | Ken Onishi v Pak Long Yeung | 6-4,6-2 |
| ITF Hong Kong F1 | 2017/01/02 02:00 | Ken Onishi v Jui-Chen Hung | 6-3,7-5 |