Round: 54 Ground: Carpet indoor
| ITF Egypt F20 | 2018/09/27 08:00 | Alexander Erler v Ondrej Krstev | 6-4,6-4 |
| ITF Egypt F20 | 2018/09/25 08:00 | Vasisht Cheruku v Ondrej Krstev | 3-6,7-5,3-6 |
| ITF Egypt F19 | 2018/09/20 08:00 | Simone Roncalli v Ondrej Krstev | 6-3,6-0 |
| ITF Egypt F19 | 2018/09/19 10:10 | Ondrej Krstev v Adham Gaber | 3-6,6-3,6-1 |
| ITF Serbia F4 | 2018/08/28 08:00 | Martins Podzus v Ondrej Krstev | 6-1,6-1 |
| ITF Serbia F3 | 2018/08/23 08:00 | Ondrej Krstev v Dejan Katic | 6-7,6-3,3-6 |
| ITF Serbia F3 | 2018/08/21 08:00 | Darko Bojanovic v Ondrej Krstev | 7-6,1-6,3-6 |
| ITF Slovakia F3 | 2018/08/07 11:55 | Antonio Massara v Ondrej Krstev | 6-3,6-2 |