| ITF Hungary F2 | 2017/05/17 08:00 | Ken Onishi v Tomislav Jotovski | 6-4,2-6,4-6 |
| ITF Hungary F2 | 2017/05/16 09:25 | Michal Schmid v Ken Onishi | 6-2,4-6,4-6 |
| ITF Hungary F1 | 2017/05/11 11:40 | Attila Balazs v Ken Onishi | 6-2,6-2 |
| ITF Hungary F1 | 2017/05/10 08:00 | Alexander Ovcharov v Ken Onishi | 1-6,3-6 |
| 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 |
| ITF Hungary F2 | 2017/05/16 12:05 | Gabor Borsos v Denys Mylokostov | 6-7,3-6 |
| ITF Hungary F1 | 2017/05/10 09:35 | Gabor Borsos v Nino Serdarusic | 1-6,6-3,2-6 |
| Challenger Ostrava Qual | 2017/04/29 08:00 | Gabor Borsos v Dragos Dima | 3-6,2-6 |
| ITF Italy F9 | 2017/04/19 12:30 | Laurent Lokoli v Gabor Borsos | 7-5,6-3 |
| ITF Italy F9 | 2017/04/18 14:55 | Gregoire Barrere v Gabor Borsos | 4-6,2-6 |
| ITF Italy F9 Qual | 2017/04/17 13:00 | Gabor Borsos v Corrado Summaria | 6-3,7-5 |
| ITF Israel F3 | 2017/03/29 07:30 | Viktor Filipenko v Gabor Borsos | 6-2,6-2 |
| ITF Israel F3 | 2017/03/28 07:30 | Daniel Tamir v Gabor Borsos | 0-6,2-6 |