Round: 28 Ground: Hardcourt outdoor
| 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 |
| Cupa Davis | 2018/02/03 10:20 | Takanyi Garanganga v Cem Ilkel | 6-4,7-5 |
| Australian Open Qual | 2018/01/10 05:05 | Salvatore Caruso v Cem Ilkel | 6-2,6-4 |
| Challenger - Yokohama | 2018/03/02 02:00 | Tatsuma Ito v Hiroki Moriya | 6-3,6-3 |
| Challenger - Yokohama | 2018/02/28 03:55 | Tatsuma Ito v Jason Kubler | 3-6,6-3,7-6 |
| Challenger - Yokohama | 2018/02/26 04:30 | Tatsuma Ito v Kaito Uesugi | 6-2,6-3 |
| Challenger Kyoto | 2018/02/21 08:10 | Blake Ellis v Tatsuma Ito | 4-6,6-3,6-4 |
| Challenger Kyoto | 2018/02/19 07:10 | Yuta Shimizu v Tatsuma Ito | 2-6,3-6 |
| Challenger - Dallas | 2018/01/29 18:45 | Mackenzie McDonald v Tatsuma Ito | 7-5,6-3 |
| Australian Open Qual | 2018/01/10 08:50 | Tatsuma Ito v Casper Ruud | 6-4,1-6,4-6 |
| Challenger - Bangkok | 2018/01/01 08:00 | Tatsuma Ito v Blaz Rola | 6-7,6-7 |