Round: 62 Ground: Clay
| ITF Germany F11 | 2018/08/09 09:00 | Kaczynski, Kevin v Benjamin Hassan | 2-6,1-6 |
| ITF Germany F11 | 2018/08/08 10:00 | Chaukulkar, Tejas v Kaczynski, Kevin | 3-6,6-4,1-6 |
| ITF Germany F11 | 2018/08/07 11:40 | Baumann, Daniel v Kaczynski, Kevin | 3-6,0-6 |
| ITF Netherlands F3 | 2018/07/10 13:55 | Gerritsen, Stephan v Kaczynski, Kevin | 7-6,2-6,6-1 |
| ITF Netherlands F3 | 2018/07/08 11:30 | Kaczynski, Kevin v Naser, Javier | 6-0,6-7,7-6 |
| ITF Netherlands F3 | 2018/07/07 14:00 | Kaczynski, Kevin v Anselmo, Baptiste | 6-1,3-6,6-3 |
| ITF Netherlands F3 | 2018/07/07 09:30 | Kaczynski, Kevin v Deelstra, Laurens | 6-1,1-6,6-4 |
| ITF Netherlands F2 | 2018/07/04 08:00 | Heliovaara, Harri v Kaczynski, Kevin | 6-3,6-1 |