Stadium: Court 3 Round: 62 Ground: Clay
| 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 Kazan | 2021/03/09 12:15 | Sergey Fomin v Denis Klok | 6-2,6-4 |
| ITF M15 Antalya | 2021/02/07 06:00 | Benedikt Henning v Denis Klok | 6-1,6-1 |
| ITF M25 Villena | 2021/02/01 10:30 | Denis Klok v Alejandro Manzanera Pertusa | 2-6,2-6 |
| ITF M25 Villena | 2021/01/31 10:30 | Denis Klok v Mario Mansilla Diez | 6-2,6-3 |
| ITF M15 Antalya | 2021/04/11 07:00 | Noel Larwig v Matyas Fuele | 3-6,1-6 |
| ITF M15 Antalya | 2021/04/04 06:30 | Tomas Lanik v Noel Larwig | 6-1,6-2 |
| ITF M15 Sharm El Sheikh | 2021/03/14 14:30 | Noel Larwig v Yacoub Makzoume | 3-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/03/08 07:30 | Noel Larwig v Alexandros Skorilas | 4-6,6-4,3-10 |
| ITF M15 Sharm El Sheikh | 2021/03/07 07:00 | Noel Larwig v Babji Siva Atturu | 6-1,6-4 |
| ITF M15 Sharm El Sheikh | 2021/03/01 13:00 | Matic Spec v Noel Larwig | 6-3,6-2 |
| ITF M15 Sharm El Sheikh | 2021/02/21 06:30 | Noel Larwig v Daisuke Sumizawa | 3-6,2-6 |
| ITF M15 Bressuire | 2021/01/17 17:00 | Noel Larwig v Matteo Arnaldi | 1-6,2-6 |