Stadium: Court 3 Round: 25 Ground: Clay
| ITF Slovakia F2 | 2017/08/02 08:00 | Onishi, Ken v Boltz, Sebastien | 3-6,6-4,6-7 |
| ITF Slovakia F1 | 2017/07/29 11:25 | Dubrivnyy, Artem v Onishi, Ken | 7-5,3-6,6-0 |
| ITF Slovakia F1 | 2017/07/28 10:00 | Onishi, Ken v Nejedly, Pavel | 6-3,6-3 |
| ITF Slovakia F1 | 2017/07/27 12:15 | Onishi, Ken v Liska, Tomas | 6-2,6-1 |
| ITF Slovakia F1 | 2017/07/25 11:00 | Onishi, Ken v Ricci, Alessandro | 6-2,7-5 |
| 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 Slovakia F2 | 2017/08/03 14:00 | Mate Valkusz v Kalenichenko, Danylo | 6-4,1-6,6-4 |
| ITF Slovakia F2 | 2017/08/02 08:00 | Szintai, David v Kalenichenko, Danylo | 0-6,2-6 |
| ITF Slovakia F1 | 2017/07/30 09:00 | Kalenichenko, Danylo v Dubrivnyy, Artem | 6-4,3-6,6-2 |
| ITF Slovakia F1 | 2017/07/29 09:00 | Nagy, Peter v Kalenichenko, Danylo | 6-3,4-6,0-6 |
| ITF Slovakia F1 | 2017/07/28 11:55 | Kalenichenko, Danylo v Nik Razborsek | 7-6,6-2 |
| ITF Slovakia F1 | 2017/07/27 09:00 | Kalenichenko, Danylo v Paul Jubb | 6-1,6-2 |
| ITF Slovakia F1 | 2017/07/26 10:40 | Kalenichenko, Danylo v Juras, David | 6-2,6-1 |
| Poznan, Poland | 2017/07/18 13:00 | Kalenichenko, Danylo v Mayer, Florian (1983) | 1-6,4-6 |