Stadium: Centre Court Round: 25 Ground: Hardcourt outdoor
| Challenger Tunis | 2018/04/16 11:25 | Alexei Popyrin v Nikola Milojevic | 4-6,7-6,6-3 |
| Challenger Barletta | 2018/04/11 09:00 | Nikola Milojevic v Jaume Munar | 5-7,1-6 |
| Challenger Barletta | 2018/04/10 11:15 | Marco Cecchinato v Nikola Milojevic | 3-6,5-7 |
| Challenger Shenzhen | 2018/03/15 02:00 | Malek Jaziri v Nikola Milojevic | 7-5,1-6,7-5 |
| ITF Kazakhstan F2 | 2018/02/24 05:00 | Nikola Milojevic v Sanjar Fayziev | 6-2,5-7,7-6 |
| ITF Kazakhstan F2 | 2018/02/23 07:05 | Nikola Milojevic v Vladyslav Manafov | 6-3,6-3 |
| ITF Kazakhstan F2 | 2018/02/22 04:00 | Nikola Milojevic v Alexander Igoshin | 6-4,6-1 |
| ITF Kazakhstan F2 | 2018/02/21 07:35 | Nikola Milojevic v Lukas Ollert | 6-7,6-3,6-4 |
| ITF Uzbekistan F1 | 2018/04/20 05:00 | Evgeny Tyurnev v Konstantin Kravchuk | 6-3,3-6,6-3 |
| ITF Uzbekistan F1 | 2018/04/19 06:35 | Sanjar Fayziev v Konstantin Kravchuk | 2-6,6-3,2-6 |
| ITF Uzbekistan F1 Qual | 2018/04/18 05:00 | Vadym Ursu v Konstantin Kravchuk | 6-2,4-6,4-6 |
| ITF Uzbekistan F1 | 2018/04/16 07:35 | Pavel Tsoy v Konstantin Kravchuk | 2-6,2-6 |
| Challenger Yokohama | 2018/02/27 01:00 | Konstantin Kravchuk v Hiroki Moriya | 0-6,2-6 |
| Challenger Kyoto | 2018/02/22 01:30 | Konstantin Kravchuk v Jordan Thompson | 3-6,1-6 |
| Challenger Kyoto | 2018/02/20 05:00 | Konstantin Kravchuk v Shintaro Imai | 6-4,7-5 |
| Challenger Budapest Qual | 2018/02/03 16:45 | Konstantin Kravchuk v Tom Farquharson | 3-6,6-7 |