Round: 44 Ground: Clay
| ITF Kazakhstan F4 Qual | 2018/04/14 08:30 | Maslov, Maksim v Bolotov, Sergey | 1-6,1-6 |
| ITF Kazakhstan F5 Qual | 2018/04/21 06:55 | Tasenkov, Vladislav v Bolotov, Sergey | 1-6,6-4,3-6 |
| ITF Kazakhstan F4 Qual | 2018/04/15 09:30 | Bolotov, Sergey v Minin, Matvey | 6-7,7-6,1-6 |
| ITF Kazakhstan F4 Qual | 2018/04/14 08:30 | Maslov, Maksim v Bolotov, Sergey | 1-6,1-6 |
| ITF Russia F3 | 2018/03/12 07:00 | Mikalai Haliak v Bolotov, Sergey | 6-2,6-2 |
| ITF Russia F3 | 2018/03/11 09:00 | Bolotov, Sergey v Aliaksandr Liaonenka | 7-5,7-5 |
| ITF Russia F2 | 2018/03/03 07:00 | Korolev, Vladimir v Bolotov, Sergey | 6-2,6-0 |
| ITF Vietnam F3 | 2017/11/20 03:00 | Mikhaylyuk, Ivan v Bolotov, Sergey | 6-3,6-3 |
| ITF Vietnam F3 | 2017/11/18 05:00 | Kim, Cheong Hwi v Bolotov, Sergey | 6-7,2-6 |
| ITF Kazakhstan F4 Qual | 2018/04/14 08:30 | Maslov, Maksim v Bolotov, Sergey | 1-6,1-6 |
| ITF Kazakhstan F3 Qual | 2018/04/08 05:00 | Maslov, Maksim v Timoshenko, Igor | 0-6,1-6 |
| ITF Spain F22 Qual | 2017/07/15 09:00 | Stepanov Zyabtchenko, Felipe v Maslov, Maksim | 6-0,6-1 |