Round: 62 Ground: Clay
| ITF Germany F7 | 2017/07/10 10:30 | Alex Knaff v Yohei Otsuka | 6-2,6-3 |
| ITF Germany F7 | 2017/07/09 08:00 | Yohei Otsuka v Alex Solanki | 6-3,2-6,6-4 |
| ITF Germany F7 | 2017/07/09 08:00 | Yohei Otsuka v Nicolas Affolter | 6-3,6-0 |
| ITF Germany F6 | 2017/07/02 08:00 | Tristan Meraut v Yohei Otsuka | 6-3,6-0 |
| ITF Germany F5 | 2017/06/26 08:00 | Yohei Otsuka v Michael Vrbensky | 2-6,2-6 |
| ITF Germany F5 | 2017/06/25 09:00 | Yohei Otsuka v Alexander Abou Boutros | 6-1,6-1 |
| ITF Germany F4 | 2017/06/17 14:00 | Yohei Otsuka v Leonard Von Hindte | 3-6,1-6 |
| ITF Turkey F18 | 2017/05/07 07:00 | Goran Markovic v Yohei Otsuka | 7-6,6-1 |
| ITF Tunisia F16 | 2017/04/23 09:00 | Maxime Pauwels v Oscar Matias Leiva Biason | 6-0,6-3 |
| ITF Tunisia F16 | 2017/04/22 09:00 | Kevin Portmann v Oscar Matias Leiva Biason | 0-6,0-6 |
| ITF Tunisia F15 | 2017/04/15 08:00 | Rodrigo Budnik v Oscar Matias Leiva Biason | 6-4,6-2 |
| ITF Tunisia F14 | 2017/04/08 08:30 | Loick Bruandet v Oscar Matias Leiva Biason | 6-1,6-3 |
| ITF Tunisia F9 | 2017/04/01 09:00 | Alberto Berbegal Moreno v Oscar Matias Leiva Biason | 6-1,4-6,6-1 |
| ITF Tunisia F12 | 2017/03/25 11:00 | Oscar Matias Leiva Biason v Matteo De Vincentis | 3-6,0-6 |
| Challenger Santiago Qual | 2017/03/04 16:55 | David Fleming v Oscar Matias Leiva Biason | 6-3,6-2 |
| ITF Chile F8 | 2016/12/17 19:45 | Matias Soto v Oscar Matias Leiva Biason | 6-1,6-3 |