| ITF Vietnam F4 | 2018/10/20 03:00 | Kim, Cheong Hwi v Mohd Adam Das, Shamirul Shahril | 6-4,3-6,2-6 |
| Thailande F6, Qualifications Simples | 2018/10/06 03:30 | Susanto, David Agung v Kim, Cheong Hwi | 6-2,6-4 |
| ITF Thailand F5 | 2018/09/29 02:30 | Daisuke Sumizawa v Kim, Cheong Hwi | 6-4,6-1 |
| ITF Korea F6 | 2018/08/28 02:00 | Ku Keon Kang v Kim, Cheong Hwi | 6-0,6-0 |
| ITF Korea F5 | 2018/08/19 02:00 | Park, Sung Jun v Kim, Cheong Hwi | 6-0,6-2 |
| ITF Korea F5 | 2018/08/18 03:00 | Lewis, Edward v Kim, Cheong Hwi | 2-6,0-6 |
| ITF Korea F4 | 2018/08/13 01:00 | Kim, Cheong Hwi v Jeong Heon Lee | 3-6,6-3,3-6 |
| ITF Korea F4 | 2018/08/12 02:00 | Ji, Ang v Kim, Cheong Hwi | 1-6,1-6 |
| Istanbul, Turkey | 2018/09/09 09:00 | Polyakov, Vladimir v Simon, Tobias | 0-6,3-6 |
| Istanbul, Turkey | 2018/09/08 07:00 | S Mert Ozdemir v Polyakov, Vladimir | 6-7,1-6 |
| ITF Russia F8 | 2018/08/27 07:00 | Polyakov, Vladimir v Baryshev, Alexey | 6-3,6-4 |
| Russia F8, Singles Qualifying | 2018/08/26 07:00 | Polyakov, Vladimir v Kim, Daniil | 3-6,6-1,6-4 |
| ITF Russia F6 | 2018/08/14 08:10 | Polyakov, Vladimir v Dzhanashia, Shalva | 2-6,2-6 |
| ITF Russia F4 | 2018/07/31 08:30 | Polyakov, Vladimir v Ayap, Sagadat | 3-6,3-6 |
| Challenger Fergana Qual | 2018/06/16 05:55 | Saidkarimov, Saida' Lo v Polyakov, Vladimir | 6-4,6-4 |
| ITF Uzbekistan F4 | 2018/06/05 04:00 | Polyakov, Vladimir v Fufygin, Mikhail | 0-6,2-6 |