Round: 25 Ground: Clay
| ITF Austria F2 | 2017/07/10 11:00 | Onishi, Ken v Jahn, Jeremy | 3-6,6-7 |
| ITF Czech Republic F4 | 2017/07/05 10:30 | Jonathan Mridha v Onishi, Ken | 6-2,6-1 |
| ITF Czech Republic F4 | 2017/07/04 09:35 | Onishi, Ken v Konecny, Michal | 3-6,6-4,7-5 |
| ITF Romania F4 | 2017/06/21 09:45 | Onishi, Ken v Ungur, Adrian | 2-6,0-6 |
| ITF Romania F3 | 2017/06/15 07:00 | Frunza, Nicolae v Onishi, Ken | 6-4,6-1 |
| ITF Romania F3 | 2017/06/14 07:00 | Maiga, Riccardo v Onishi, Ken | 7-6,1-6,2-6 |
| ITF Hungary F3 | 2017/05/24 09:30 | Onishi, Ken v Borsos, Gabor | 1-6,1-6 |
| ITF Hungary F2 | 2017/05/17 08:00 | Onishi, Ken v Jotovski, Tomislav | 6-4,2-6,4-6 |
| ITF Netherlands F4 | 2017/07/09 08:00 | Ricci, Alessandro v Brons, Bart | 4-6,1-6 |
| ITF Belgium F1 Qual | 2017/06/18 13:10 | Ricci, Alessandro v Mertens, Nico | 1-6,1-6 |
| ITF Czech Republic F3 Qual | 2017/05/29 11:00 | Ricci, Alessandro v Vejvara, Lukas | 0-6,5-7 |
| ITF Czech Republic F3 Qual | 2017/05/28 09:30 | Ricci, Alessandro v Michal Lusovsky | 6-2,6-3 |
| Italie F8, Qualifications Simples | 2017/04/10 08:00 | Sude, Jakob v Ricci, Alessandro | 6-2,6-4 |
| ITF Italy F7 Qual | 2017/04/02 07:30 | Adrian Bodmer v Ricci, Alessandro | 6-1,6-2 |
| ITF Italy F7 Qual | 2017/04/01 07:30 | Sudzum, Marcel Marlon v Ricci, Alessandro | 1-6,0-6 |
| ITF Egypt F8 | 2017/03/04 08:00 | Ricci, Alessandro v Yvo Panak | 6-7,6-3,3-6 |