Round: 25 Ground: Clay
| ITF Japan F7 | 2017/06/06 04:00 | Johan Nikles v Naoki Nakagawa | 1-6,1-6 |
| ITF Japan F6 | 2017/05/30 01:00 | Sora Fukuda v Johan Nikles | 4-6,6-1,7-5 |
| ITF Spain F13 | 2017/05/10 08:30 | Johan Nikles v Orlando Luz | 4-6,3-6 |
| ITF Spain F13 | 2017/05/09 11:50 | Daniel Querol Cherigny v Johan Nikles | 3-6,4-6 |
| ITF Tunisia F17 | 2017/05/04 09:00 | Cristian Rodriguez v Johan Nikles | 6-0,6-4 |
| ITF Tunisia F17 | 2017/05/02 09:00 | Johan Nikles v Zizou Bergs | 6-4,6-4 |
| ITF Tunisia F15 | 2017/04/18 11:10 | Hernan Casanova v Johan Nikles | 6-4,6-3 |
| ITF Tunisia F14 | 2017/04/11 11:20 | Theo Fournerie v Johan Nikles | 6-1,1-6,6-1 |
| ITF Japan F7 | 2017/06/06 01:00 | Arata Onozawa v Masaki Sasai | 6-3,2-6,3-6 |
| ITF Japan F6 | 2017/05/30 03:30 | Yuto Sakai v Arata Onozawa | 7-6,7-5 |
| ITF Singapore F1 Qual | 2017/05/21 04:00 | Arata Onozawa v Michael Look | 4-6,7-6,4-6 |
| ITF Japan F3 | 2017/03/19 01:00 | Arata Onozawa v Rimpei Kawakami | 3-6,6-2,2-6 |
| ITF Japan F3 | 2017/03/18 06:00 | Arata Onozawa v Sota Fujii | 6-4,6-3 |
| Challenger Kyoto Qual | 2017/02/19 05:25 | Jimmy Wang v Arata Onozawa | 6-3,6-4 |
| Challenger Kyoto Qual | 2017/02/18 07:35 | Arata Onozawa v Yusuke Takahashi | 6-3,6-7,6-3 |
| Others | 2016/11/12 07:35 | Kento Takeuchi v Arata Onozawa | 7-6,6-2 |