Stadium: Court 7 Round: 25 Ground: Clay
| ITF Slovakia F3 | 2017/08/09 09:55 | Onishi, Ken v Kalenichenko, Danylo | 1-6,4-6 |
| 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 Serbia F1 | 2017/08/11 08:00 | Nino Serdarusic v Szintai, David | 6-1,6-2 |
| ITF Serbia F1 | 2017/08/10 08:00 | Szintai, David v Cungu, Rrezart | 6-3,6-1 |
| ITF Serbia F1 Qual | 2017/08/07 09:05 | Nikolic, Milos v Szintai, David | 1-6,0-6 |
| ITF Serbia F1 Qual | 2017/08/06 09:30 | Banicevic, Igor v Szintai, David | 0-6,1-6 |
| ITF Slovakia F2 | 2017/08/02 08:00 | Szintai, David v Kalenichenko, Danylo | 0-6,2-6 |
| ITF Slovakia F2 | 2017/08/01 07:00 | Sramek, Marek v Szintai, David | 4-6,3-6 |
| ITF Slovakia F2 | 2017/07/30 09:00 | Hruncak, Dominik v Szintai, David | 3-6,1-6 |
| ITF Hungary F5 | 2017/06/20 11:45 | Szintai, David v Krstin, Pedja | 0-6,7-5,4-6 |