Round: 26 Ground: Clay
| ITF Kazakhstan F4 | 2018/04/17 06:00 | Roman Khassanov v Matvey Minin | 4-6,2-6 |
| ITF Kazakhstan F3 Qual | 2018/04/10 07:55 | Denis Yevseyev v Roman Khassanov | 7-6,6-2 |
| ITF Qatar F3 | 2018/03/13 12:00 | Tobias Simon v Roman Khassanov | 6-3,6-4 |
| ITF Qatar F2 | 2018/03/06 17:05 | Roman Khassanov v Marsel Ilhan | 2-6,1-6 |
| ITF Kazakhstan F2 | 2018/02/19 04:00 | Roman Khassanov v Alexander Igoshin | 4-6,4-6 |
| ITF Kazakhstan F1 Qual | 2018/02/14 09:50 | Roman Khassanov v Denis Yevseyev | 2-6,3-6 |
| ITF Kazakhstan F1 | 2018/02/13 09:15 | Vladimir Polyakov v Roman Khassanov | 3-6,6-7 |
| Davis Cup | 2018/02/04 07:55 | Roman Khassanov v Marc-Andrea Huesler | 3-6,1-6 |
| ITF Turkey F16 | 2018/04/21 09:30 | Alberto Cammarata v Koray Kirci | 7-5,6-4 |
| ITF Turkey F12 | 2018/03/27 09:05 | Thomas Statzberger v Koray Kirci | 6-1,6-0 |
| ITF Turkey F11 | 2018/03/22 07:30 | Koray Kirci v Juan Pablo Paz | 6-3,5-7,5-7 |
| ITF Turkey F11 | 2018/03/20 09:00 | Koray Kirci v Bogdan Borza | 6-4,7-6 |
| ITF Turkey F8 | 2018/03/01 08:10 | Koray Kirci v Oriol Roca Batalla | 3-6,4-6 |
| ITF Turkey F8 | 2018/02/27 11:15 | Koray Kirci v Chun Hsin Tseng | 6-4,6-2 |
| ITF Turkey F7 | 2018/02/20 11:30 | Altug Celikbilek v Koray Kirci | 7-6,2-6,6-1 |
| ITF Turkey F6 | 2018/02/12 07:00 | Ryuki Matsuda v Koray Kirci | 6-3,6-1 |