Stadium: Court 2 Round: 46
| Challenger Almaty 2 | 2018/09/29 09:20 | Khassanov, Roman v Grigoriy Lomakin | 6-4,6-3 |
| ITF Kazakhstan F8 | 2018/09/25 06:40 | Max Houkes v Khassanov, Roman | 7-6,6-3 |
| ITF Kazakhstan F7 | 2018/09/19 05:20 | Andrey Chepelev v Khassanov, Roman | 6-3,6-2 |
| ITF Kazakhstan F7 | 2018/09/18 05:10 | Max Houkes v Khassanov, Roman | 5-7,6-3,6-7 |
| Kazakhstan F6, Singles | 2018/09/13 06:30 | Ayap, Sagadat v Khassanov, Roman | 2-6,3-6 |
| Kazakhstan F6, Singles | 2018/09/12 07:10 | Yulik, Viacheslav v Khassanov, Roman | 3-6,6-3,3-6 |
| Kazakhstan F6, Singles | 2018/09/11 08:25 | Mugevicius, Lukas v Khassanov, Roman | 5-7,1-6 |
| ITF Ukraine F4 | 2018/08/29 14:30 | Khassanov, Roman v Ivan Sergeyev | 6-7,1-6 |
| Challenger Almaty 2 | 2018/09/29 09:20 | Khumoyun Sultanov v Simon, Tobias | 7-6,6-4 |
| Challenger Astana | 2018/07/19 06:30 | Khumoyun Sultanov v Sebastian Ofner | 3-6,3-6 |
| Challenger Astana | 2018/07/17 05:30 | Dustov, Farrukh v Khumoyun Sultanov | 4-6,2-6 |
| Challenger Astana Qual | 2018/07/15 04:30 | Arjun Kadhe v Khumoyun Sultanov | 1-6,6-3,2-6 |
| Challenger Astana Qual | 2018/07/14 05:20 | Elgin, M. v Khumoyun Sultanov | 2-6,4-6 |
| Fergana, Uzbekistan | 2018/06/20 06:30 | Khumoyun Sultanov v Lopez Perez | 5-7,6-7 |
| Fergana, Uzbekistan | 2018/06/18 07:05 | Ortega-Olmedo, Roberto v Khumoyun Sultanov | 6-7,3-6 |
| ITF Uzbekistan F4 | 2018/06/08 05:00 | Roman Safiullin v Khumoyun Sultanov | 6-4,7-5 |