Stadium: Clay 7 Round: 62 Ground: Hardcourt outdoor
| ITF Spain F27 | 2018/09/10 08:30 | Feitt, Franco v Prehn, Noah | 4-6,6-1,6-0 |
| ITF Netherlands F3 | 2018/07/07 07:30 | Collins, Sean v Prehn, Noah | 6-2,6-4 |
| ITF Germany F4 | 2018/06/16 10:30 | Mayer, Patrick v Prehn, Noah | 6-1,6-1 |
| ITF Turkey F22 | 2018/06/02 07:30 | Cengiz Aksu v Prehn, Noah | 6-0,6-1 |
| ITF Poland F3 Qual | 2018/05/14 07:30 | Panfil, Grzegorz v Prehn, Noah | 6-0,6-0 |
| ITF Turkey F9 | 2018/03/03 07:00 | Prehn, Noah v Melnic, Vladislav | 1-6,6-3,3-6 |
| Turkey F8, Singles Qualifying | 2018/02/24 09:30 | Prehn, Noah v Solomatin, Igor | 3-6,0-6 |
| ITF Turkey F4 | 2018/01/27 07:30 | Prehn, Noah v Gulcur, Polat | 6-7,6-3,5-7 |
| ITF Turkey F30 | 2018/09/29 07:00 | Walder, Jim v Endrizzi, Michelangelo | 6-2,6-1 |
| ITF Turkey F29 | 2018/09/27 09:55 | Nikolas Sanchez Izquierdo v Walder, Jim | 6-7,6-3,6-4 |
| ITF Turkey F29 | 2018/09/26 07:30 | Iordache, Sorin Andrei v Walder, Jim | 2-6,1-6 |
| ITF Turkey F29 | 2018/09/24 07:30 | Walder, Jim v Bachmaier, Philip | 2-6,7-5,6-3 |
| ITF Turkey F29 | 2018/09/22 07:00 | Walder, Jim v Lucini, Federico | 5-7,7-6,6-1 |
| ITF Turkey F28 | 2018/09/21 07:30 | Walder, Jim v Perchicot, Mathieu | 3-6,1-6 |
| ITF Turkey F28 | 2018/09/20 08:50 | Walder, Jim v Luria, Emmanuel | 6-2,6-0 |
| ITF Turkey F28 | 2018/09/19 07:30 | Gilmore, Stratton v Walder, Jim | 3-6,0-6 |