Stadium: Court 2 Round: 25 Ground: Clay
| ITF Kazakhstan F1 | 2018/02/12 04:00 | Fufygin, Mikhail v Denis Klok | 1-6,6-2,7-6 |
| ITF M15 Kazan | 2021/11/25 09:55 | Fufygin, Mikhail v Erik Arutiunian | 4-6,4-6 |
| ITF M15 Kazan | 2021/11/24 12:05 | Fufygin, Mikhail v Konstantin Zhzhenov | 4-6,6-3,6-3 |
| ITF - M15 Sharm El Sheikh | 2021/11/17 10:30 | Fufygin, Mikhail v Boris Pokotilov | 5-7,7-5,5-7 |
| ITF - M15 Sharm El Sheikh | 2021/11/10 11:55 | Oscar Moraing v Fufygin, Mikhail | 6-7,6-2,6-1 |
| ITF - M15 Sharm El Sheikh | 2021/11/09 08:00 | Fufygin, Mikhail v Ben Jones | 7-6,6-4 |
| ITF - M15 Sharm El Sheikh | 2021/11/08 09:00 | Fufygin, Mikhail v Galfinger, Rostislav | 6-4,6-2 |
| ITF - M15 Sharm El Sheikh | 2021/11/07 07:30 | Fufygin, Mikhail v Qabazard, Essa | 6-2,6-3 |
| ITF M15 Telavi | 2021/08/04 06:30 | Yanki Erel v Fufygin, Mikhail | 6-2,7-6 |
| ITF M15 Nules | 2021/11/16 12:15 | Denis Klok v Carlos Sanchez Jover | 4-6,1-6 |
| ITF - M15 Antalya | 2021/11/03 13:05 | Mircea-Alexandru Jecan v Denis Klok | 6-2,6-1 |
| ITF - M15 Antalya | 2021/10/27 11:35 | Marlon Vankan v Denis Klok | 6-0,6-0 |
| ITF - M15 Antalya | 2021/10/18 12:45 | Denis Klok v Radovan Michalik | 1-6,0-6 |
| ITF - M15 Antalya | 2021/10/17 07:00 | Denis Klok v Sven Corbinais | 6-4,6-4 |
| ITF - M15 Antalya | 2021/10/12 07:00 | Lukas Palovic v Denis Klok | 4-6,6-0,6-3 |
| ITF M25 Skopje | 2021/09/28 11:15 | Denis Klok v Andrey Chepelev | 2-6,1-6 |
| Pirot, Singles M-ITF-SRB-05A | 2021/09/23 08:00 | Denis Klok v Kristijan Juhas | 1-6,0-6 |