Stadium: Y Round: 54 Ground: Hardcourt outdoor
| ITF Turkey F32 | 2018/10/13 07:00 | Philipp Sikorski v Razvan M Codescu | 1-6,1-6 |
| ITF Turkey F31 | 2018/10/10 09:00 | Juan Pablo Paz v Philipp Sikorski | 6-0,6-1 |
| ITF Ukraine F4 | 2018/08/26 10:00 | Philipp Sikorski v Gleb Alekseenko | 2-6,4-6 |
| ITF Germany F7 | 2018/07/08 08:00 | Gregorio Cordonnier v Philipp Sikorski | 7-5,6-3 |
| ITF Netherlands F2 Qual | 2018/06/30 09:30 | Milos Nikolic v Philipp Sikorski | 6-0,3-6,6-3 |
| ITF Ukraine F3 | 2018/05/19 07:00 | Volodymyr Malakhov v Philipp Sikorski | 6-4,6-4 |
| ITF Ukraine F2 | 2018/05/12 07:00 | Yuriy Kryvoy v Philipp Sikorski | 4-6,6-2,4-6 |
| ITF Ukraine F1 | 2018/05/07 07:00 | Javier Araya v Philipp Sikorski | 6-4,6-1 |
| ITF Kuwait F2 | 2018/11/06 07:30 | Alec Adamson v Karlo Cubelic | 6-1,6-3 |
| ITF Kuwait F2 | 2018/11/04 08:20 | Karlo Cubelic v Shunsuke Wakita | 6-3,2-6,6-3 |
| ITF Germany F16 | 2018/10/22 10:00 | Johann Willems v Karlo Cubelic | 6-3,6-4 |
| ITF Germany F16 | 2018/10/21 10:30 | Karlo Cubelic v Jordi Walder | 6-4,3-6,7-6 |
| ITF Germany F16 | 2018/10/21 08:00 | Nenad Vladusic v Karlo Cubelic | 2-6,5-7 |
| ITF Germany F15 | 2018/10/11 15:25 | Stefan Seifert v Karlo Cubelic | 6-4,6-7,6-2 |
| ITF Germany F15 | 2018/10/10 09:00 | Julian kenzlers v Karlo Cubelic | 1-6,1-6 |
| ITF Germany F15 | 2018/10/08 08:00 | Dominik Recek v Karlo Cubelic | 3-6,4-6 |