Estadio: Court 20 Round: 62 Ground: Clay
| ITF 15 Antalya | 2021/04/25 07:00 | Denis Klok v Vladislav Ivanov | 6-1,7-6 |
| ITF 15 Antalya | 2021/04/18 07:00 | Denis Klok v Noel Larwig | 5-7,0-6 |
| ITF M15 Shymkent | 2021/04/15 04:00 | Denis Klok v Ivan Gakhov | 5-7,6-7 |
| ITF M15 Shymkent | 2021/04/14 08:45 | Kirill Kolganov v Denis Klok | 4-6,1-6 |
| ITF M15 Shymkent | 2021/04/08 05:30 | Denis Klok v Dostanbek Tashbulatov | 2-6,4-6 |
| ITF M15 Shymkent | 2021/04/07 03:50 | Denis Klok v Islam Orynbasar | 6-1,6-2 |
| ITF M15 Kazán | 2021/03/09 12:15 | Sergey Fomin v Denis Klok | 6-2,6-4 |
| ITF 15 Antalya | 2021/02/07 06:00 | Benedikt Henning v Denis Klok | 6-1,6-1 |
| ITF 15 Antalya | 2021/04/25 07:00 | Flemming Peters v Vojtech Mares | 3-6,3-6 |
| ITF M15 Praga | 2019/11/05 09:00 | Oleksii Krutykh v Vojtech Mares | 6-2,6-1 |
| ITF M15 Praga | 2019/11/04 10:00 | Vojtech Mares v Jiri Jenicek | 0-6,7-6,10-7 |
| ITF M15 Liberec | 2019/10/21 11:00 | Vojtech Mares v Dominik Recek | 0-6,3-6 |