Stadium: COURT 7 Round: 25 Ground: Hardcourt indoor
| Challenger Nur-Sultan Qual | 2021/02/28 04:00 | Sergey Fomin v Vladyslav Manafov | 3-6,3-6 |
| Challenger Nur-Sultan | 2021/02/21 10:35 | Sergey Fomin v Vladyslav Manafov | 1-6,6-7 |
| ITF M15 Antalya | 2021/02/14 12:00 | Sergey Fomin v Rafael Giotis | 3-6,5-7 |
| ITF M15 Antalya | 2021/02/09 07:00 | Oleksii Krutykh v Sergey Fomin | 6-4,6-2 |
| ITF M15 Antalya | 2021/02/08 07:00 | Paul Woerner v Sergey Fomin | 2-6,7-5,7-10 |
| ITF M15 Antalya | 2021/02/07 06:00 | Ilya Snitari v Sergey Fomin | 7-6,1-6,8-10 |
| ITF M15 Antalya | 2021/01/17 09:00 | Sergey Fomin v Gianmarco Ferrari | 7-6,2-6,7-10 |
| ITF M15 Antalya | 2021/01/16 07:00 | Sergey Fomin v Alexander Shevchenko | 4-6,3-6 |
| 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 Manacor | 2021/01/05 14:00 | Denis Klok v Alberto Barroso Campos | 1-6,3-6 |
| ITF M15 Manacor | 2021/01/04 11:30 | Denis Klok v Peter Benjamin Privara | 6-0,5-7,15-13 |
| ITF M15 Antalya | 2020/03/12 07:55 | Sergi Perez Contri v Denis Klok | 6-4,6-2 |
| ITF M15 Antalya | 2020/03/11 07:00 | Rigele Te v Denis Klok | 3-6,1-6 |
| ITF M15 Antalya | 2020/02/20 07:00 | Maxime Hamou v Denis Klok | 6-3,3-6,6-3 |