| ITF Turkey F16 | 2018/04/22 07:30 | Nik Razborsek v Linus Krohn | 6-0,6-1 |
| ITF Turkey F16 | 2018/04/21 07:30 | Nik Razborsek v Siim Troost | 6-2,6-2 |
| ITF Turkey F15 | 2018/04/16 07:30 | Nik Razborsek v Mike Urbanija | 6-7,0-6 |
| ITF Turkey F15 | 2018/04/15 07:30 | Nik Razborsek v Juan Pablo Cenoz | 7-5,6-0 |
| ITF Turkey F15 | 2018/04/14 07:30 | Nik Razborsek v Valentin Vanta | 6-1,6-1 |
| Davis Cup | 2018/04/08 13:20 | Nik Razborsek v Altug Celikbilek | 7-5,6-3 |
| ITF Croatia F3 | 2018/03/22 14:00 | Matteo Viola v Nik Razborsek | 7-6,6-3 |
| ITF Croatia F3 | 2018/03/21 10:30 | Tommaso Gabrieli v Nik Razborsek | 3-6,3-6 |
| ITF Turkey F16 | 2018/04/22 07:30 | Linus Frost v Santiago Besada | 7-5,6-2 |
| ITF Turkey F16 | 2018/04/21 09:30 | Vital Flurin Leuch v Linus Frost | 1-6,0-6 |
| ITF Turkey F15 | 2018/04/15 09:30 | Linus Frost v Nicolas Xiviller | 6-7,2-6 |
| ITF Turkey F15 | 2018/04/14 07:30 | Linus Frost v Ruben Busch | 6-1,6-1 |
| ITF USA F8 Qual | 2018/03/17 17:00 | Andrew Fenty v Linus Frost | 2-6,5-7 |
| ITF USA F7 Qual | 2018/03/11 18:00 | Ricardo Rodriguez-Pace v Linus Frost | 7-5,6-2 |
| ITF Turkey F7 | 2018/02/17 06:30 | David Jorda Sanchis v Linus Frost | 4-6,7-5,6-1 |
| ITF Turkey F6 | 2018/02/11 06:00 | Linus Frost v Gorazd Srbljak | 4-6,3-6 |