Round: 62 Ground: Clay
| ITF Russia F1 | 2018/02/26 10:55 | Sabanin, Yan v Denis Klok | 6-7,6-4,5-7 |
| Kazakhstan F2, Singles | 2018/02/20 04:00 | Sabanin, Yan v Denis Klok | 6-2,5-7,6-3 |
| ITF Kazakhstan F2 Qual | 2018/02/18 04:00 | Denis Klok v Yulik, Viacheslav | 6-1,7-6 |
| ITF Kazakhstan F1 | 2018/02/12 04:00 | Fufygin, Mikhail 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 |
| ITF Turkey F2 | 2018/01/16 12:45 | Denis Klok v Manda, Calin | 6-2,7-6 |
| ITF Turkey F2 | 2018/01/15 07:00 | Denis Klok v Neil Oberleitner | 6-0,6-1 |
| ITF Turkey F2 | 2018/01/15 07:00 | Denis Klok v Morck, Felix | 6-1,6-2 |
| ITF Turkey F11 | 2018/03/17 08:30 | Gabriel Donev v Bugaj, Martin | 6-2,7-5 |