Stadium: Court 5 Round: 44
| ITF Russia F4 Qual | 2018/07/30 07:00 | Sultan Narbekov v Svyatoslav Shainyan | 2-6,2-6 |
| ITF Russia F4 Qual | 2018/07/29 11:00 | Oleg Besednikov v Sultan Narbekov | 3-6,3-6 |
| ITF Russia F4 Qual | 2018/07/29 07:00 | Sultan Narbekov v Andrey Budanov | 7-6,2-6,6-3 |
| Challenger Astana Qual | 2018/07/14 06:50 | Pavel Kotov v Sultan Narbekov | 6-1,6-3 |
| ITF Kazakhstan F5 Qual | 2018/04/23 05:00 | Vladislav Dubinsky v Sultan Narbekov | 6-1,6-0 |
| ITF Kazakhstan F4 Qual | 2018/04/15 09:00 | Sultan Narbekov v Imanol L Morillo | 3-6,4-6 |
| ITF Kazakhstan F4 Qual | 2018/04/14 10:10 | Aliaksandr Prudnikau v Sultan Narbekov | 6-7,3-6 |
| ITF Kazakhstan F3 Qual | 2018/04/08 07:30 | Rafik Terzyan v Sultan Narbekov | 7-5,6-0 |