Stadium: Clay Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF Turkey F32 | 2018/10/14 07:00 | Nikolas, Klemen v Guttau, Niklas | 3-6,0-6 |
| ITF Germany F2 Qual | 2018/01/21 08:30 | Lang, Robin v Nikolas, Klemen | 6-2,6-4 |
| ITF Egypt F20 | 2017/11/18 08:00 | Nikolas, Klemen v Ren Nakamura | 4-6,2-6 |
| ITF Egypt F34 | 2017/11/12 08:00 | Nikolas, Klemen v Daisuke Sumizawa | 0-6,5-7 |
| ITF Egypt F34 | 2017/11/11 08:00 | Nikolas, Klemen v Simpson, Valewis | 6-3,7-6 |
| ITF Croatia F4 Qual | 2017/03/25 10:00 | Nikolas, Klemen v Dabryian, Artsiom | 2-6,6-0,3-6 |
| ITF Croatia F3 | 2017/03/19 08:30 | Nikolas, Klemen v Kralj, Kevin | 3-6,3-6 |
| ITF Croatia F2 | 2017/03/12 08:30 | Pompei, Edoardo v Nikolas, Klemen | 7-5,6-2 |
| ITF Turkey F32 | 2018/10/18 07:00 | Ghilea, Vasile-Alexandru v Fetisleam, Edris | 6-1,3-6,2-6 |
| ITF Turkey F32 | 2018/10/17 07:00 | Vanneste, Jeroen v Ghilea, Vasile-Alexandru | 1-6,1-6 |
| ITF Turkey F31 | 2018/10/10 09:25 | Stevens, Bart v Ghilea, Vasile-Alexandru | 6-3,6-4 |
| Challenger Sibiu | 2018/09/16 10:35 | Javier Barranco Cosano v Ghilea, Vasile-Alexandru | 6-4,6-3 |
| Challenger Sibiu | 2018/09/15 07:30 | Turcu, Mihnea Lorin Stefan v Ghilea, Vasile-Alexandru | 2-6,3-6 |
| ITF Romania F13 | 2018/09/13 08:55 | Ghilea, Vasile-Alexandru v Antonescu, Vasile | 1-6,4-6 |
| ITF Romania F13 | 2018/09/12 07:15 | Georgescu, Matei Adrian v Ghilea, Vasile-Alexandru | 0-6,1-6 |
| ITF Romania F12 | 2018/09/09 09:00 | Fortuna, Claudio v Ghilea, Vasile-Alexandru | 3-6,6-2,2-6 |