Stadium: Court 5 Round: 26 Ground: Hardcourt outdoor
| ITF Turkey F35 | 2017/09/20 11:30 | Vit Kopriva v Ken Onishi | 4-6,6-1,2-6 |
| ITF Turkey F34 | 2017/09/15 12:40 | Ken Onishi v Patricio Heras | 1-6,1-6 |
| ITF Turkey F34 | 2017/09/14 13:25 | Ken Onishi v Anton Desyatnik | 6-4,6-7,6-1 |
| ITF Turkey F34 | 2017/09/12 10:30 | Ken Onishi v Jannis Kahlke | 6-7,7-6,6-0 |
| ITF Hungary F6 | 2017/08/22 12:00 | Ken Onishi v David Szintai | 7-6,2-6,5-7 |
| ITF Slovakia F3 | 2017/08/09 09:55 | Ken Onishi v Danylo Kalenichenko | 1-6,4-6 |
| ITF Slovakia F2 | 2017/08/02 08:00 | Ken Onishi v Sebastien Boltz | 3-6,6-4,6-7 |
| ITF Slovakia F1 | 2017/07/29 11:25 | Artem Dubrivnyy v Ken Onishi | 7-5,3-6,6-0 |
| ITF Turkey F35 | 2017/09/19 11:30 | Dominic Weidinger v Kevin Kaczynski | 1-6,5-7 |
| ITF Turkey F35 | 2017/09/18 07:30 | Shinta Fujii v Kevin Kaczynski | 4-6,2-6 |
| ITF Turkey F35 | 2017/09/17 07:00 | Kevin Kaczynski v Alexander Mannapov | 7-5,6-3 |
| ITF Turkey F35 | 2017/09/16 11:00 | Kevin Kaczynski v Laelson Rodrigues | 6-1,6-1 |
| ITF Netherlands F7 | 2017/08/29 10:35 | Botic Van De Zandschulp v Kevin Kaczynski | 6-3,6-1 |
| ITF Netherlands F7 | 2017/08/27 10:00 | Mats Hermans v Kevin Kaczynski | 1-6,2-6 |
| ITF Netherlands F7 | 2017/08/26 09:00 | Kevin Kaczynski v Leon Hoeveler | 6-2,6-0 |
| ITF Netherlands F6 | 2017/08/22 12:00 | Robin Kern v Kevin Kaczynski | 6-3,6-4 |