Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF Uzbekistan F4 Qual | 2018/06/04 13:25 | Sapaev, Batyr v Korobeynikov, Grigoriy | 4-6,3-6 |
| ITF Uzbekistan F4 Qual | 2018/06/03 07:10 | Sottimov, Timur v Korobeynikov, Grigoriy | 6-7,2-6 |
| ITF Uzbekistan F3 Qual | 2018/05/27 05:00 | Aliaksandr Liaonenka v Korobeynikov, Grigoriy | 6-4,5-7,6-3 |
| Uzbekistan F2, Singles Qualifying | 2018/04/23 05:00 | Korobeynikov, Grigoriy v Shofayziyev, Shonigmatjon | 2-6,3-6 |
| Uzbekistan F2, Singles Qualifying | 2018/04/22 05:00 | Khomich, Aleksei v Korobeynikov, Grigoriy | 6-0,6-7,6-7 |
| Uzbekistan F1, Singles Qualifying | 2018/04/15 06:00 | Mikalai Haliak v Korobeynikov, Grigoriy | 7-6,6-3 |
| ITF Kazakhstan F3 Qual | 2018/04/08 15:10 | Korobeynikov, Grigoriy v Dubinsky, Vladislav | 1-6,2-6 |
| ITF Kazakhstan F3 Qual | 2018/04/08 07:30 | Murat, Yerassyl v Korobeynikov, Grigoriy | 3-6,1-6 |
| ITF Uzbekistan F3 | 2018/06/02 07:35 | Cem Ilkel v Fayziev, Sanjar | 6-7,4-6 |
| ITF Uzbekistan F3 | 2018/06/01 07:00 | Fayziev, Sanjar v Betov, Sergey | 6-2,6-1 |
| ITF Uzbekistan F3 | 2018/05/31 06:50 | Fayziev, Sanjar v Roman Safiullin | 4-6,6-2,6-4 |
| ITF Uzbekistan F3 | 2018/05/30 08:10 | Fayziev, Sanjar v Khaldeev, Mihail | 6-2,7-6 |
| ITF Uzbekistan F3 | 2018/05/29 05:00 | Shyla, Yaraslau v Fayziev, Sanjar | 6-7,6-7 |
| ITF Uzbekistan F3 Qual | 2018/05/28 05:00 | Fayziev, Sanjar v Sottimov, Timur | 6-1,6-0 |
| ITF Uzbekistan F3 Qual | 2018/05/27 09:35 | Fayziev, Sanjar v Lukmanov, Azamat | 6-0,6-1 |
| Samarkand, Uzbekistan | 2018/05/15 10:20 | Aldin Setkic v Fayziev, Sanjar | 7-6,6-7,6-3 |