Stadium: MTA CC Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/06/20 07:00 | Fletcher Scott v Nikolay Sysoev | 6-1,7-5 |
| ITF M15 Antalya | 2021/06/14 07:30 | Nikolay Sysoev v Daniel Antonio Nunez | 2-6,3-6 |
| ITF M15 Antalya | 2021/06/13 07:30 | Suleyman Deniz Gursoy v Nikolay Sysoev | 2-6,4-6 |
| ITF M15 Cancun | 2020/03/08 20:00 | Jose Olivares v Nikolay Sysoev | 6-3,6-2 |
| ITF M25 Naples | 2020/02/09 15:00 | Nikolay Sysoev v Daniel Vrba | 1-6,3-6 |
| ITF M15 Cancun | 2020/01/26 19:00 | Osgar O'Hoisin v Nikolay Sysoev | 6-0,6-1 |
| ITF M15 Cancun | 2020/01/19 15:30 | Alexander Lebedev v Nikolay Sysoev | 6-2,6-2 |
| ITF M15 Cancun | 2020/01/12 17:30 | Yeudy Villar v Nikolay Sysoev | 6-3,6-2 |
| ITF M15 Antalya | 2021/06/20 07:00 | Jason Janis v Dian Nedev | 2-6,2-6 |
| ITF M15 Antalya | 2021/06/06 07:30 | Jason Janis v Osmancan Soyler | 6-3,3-6,5-10 |
| ITF M15 Heraklion | 2021/05/19 11:50 | Jason Janis v Petros Chrysochos | 2-6,3-6 |
| ITF M15 Monastir | 2021/05/09 10:00 | Jason Janis v Mattia Frinzi | 3-6,1-6 |
| ITF M15 Monastir | 2021/04/25 09:00 | Remy Bertola v Jason Janis | 6-0,6-1 |
| ITF M15 Monastir | 2021/04/18 12:00 | Giorgio Ricca v Jason Janis | 6-1,6-0 |
| ITF M15 Monastir | 2021/04/12 08:00 | Jason Janis v Yuta Kawahashi | 1-6,4-6 |
| ITF M15 Monastir | 2021/04/11 08:00 | Vincent Knoess v Jason Janis | 0-6,3-6 |