Stadium: Court 3 Round: 25 Ground: Clay
| ITF Turkey F11 | 2018/03/21 08:45 | Genaro Alberto Olivieri v Cem Ilkel | 6-4,6-3 |
| Challenger Yokohama | 2018/03/02 02:00 | Cem Ilkel v Tobias Kamke | 7-6,6-2 |
| Challenger Yokohama | 2018/02/28 01:30 | Duckhee Lee v Cem Ilkel | 2-6,6-2,6-7 |
| Challenger Yokohama | 2018/02/27 01:00 | Blake Ellis v Cem Ilkel | 3-6,4-6 |
| Challenger Kyoto | 2018/02/20 03:45 | Cem Ilkel v Tim Puetz | 3-6,2-6 |
| Challenger Chennai | 2018/02/14 05:30 | Yasutaka Uchiyama v Cem Ilkel | 6-4,7-5 |
| Challenger Chennai | 2018/02/13 06:20 | Cem Ilkel v Dmitry Popko | 4-6,7-6,6-2 |
| Davis Cup | 2018/02/03 10:20 | Takanyi Garanganga v Cem Ilkel | 6-4,7-5 |
| ITF Turkey F12 | 2018/03/26 07:00 | Denis Klok v Francisco Comesana | 6-4,6-2 |
| ITF Turkey F12 | 2018/03/25 07:00 | Denis Klok v Zlatan Palazov | 6-4,7-5 |
| ITF Turkey F12 | 2018/03/24 06:30 | Denis Klok v Martin Bugaj | 6-3,3-6,7-5 |
| ITF Russia F1 | 2018/02/26 10:55 | Yan Sabanin v Denis Klok | 6-7,6-4,5-7 |
| ITF Kazakhstan F2 | 2018/02/20 04:00 | Yan Sabanin v Denis Klok | 6-2,5-7,6-3 |
| ITF Kazakhstan F2 Qual | 2018/02/18 04:00 | Denis Klok v Viacheslav Yulik | 6-1,7-6 |
| ITF Kazakhstan F1 | 2018/02/12 04:00 | Mikhail Fufygin v Denis Klok | 1-6,6-2,7-6 |
| ITF Turkey F2 | 2018/01/17 07:30 | Denis Klok v Ryan James Storrie | 2-6,6-7 |