Stadium: Court 4 Round: 25 Ground: Clay
| ITF - M25 Koksijde | 2021/08/15 13:30 | Richard Zusman v Max Cunat | 6-7,2-6 |
| ITF - M15 Valldoreix | 2021/05/12 09:50 | Rayane Roumane v Richard Zusman | 3-6,6-3,6-3 |
| ITF - M25 Reus | 2021/04/11 07:00 | Emilio Nava v Richard Zusman | 6-4,7-6 |
| ITF - M15 Antalya | 2021/03/28 06:30 | Alexander Ovcharov v Richard Zusman | 6-3,6-3 |
| ITF - M15 Antalya | 2021/03/21 07:00 | Ivan Denisov v Richard Zusman | 7-5,6-4 |
| ITF - M15 Antalya | 2021/03/16 09:30 | Richard Zusman v Peter Fajta | 5-7,5-7 |
| ITF - M15 Torello | 2020/12/07 11:30 | Richard Zusman v Kuzey Cekirge | 3-6,6-3,5-10 |
| ITF - M15 Benicarlo | 2020/11/22 14:00 | Richard Zusman v Luis Faria | 4-6,3-6 |
| ITF - M15 Monastir | 2021/08/24 08:30 | Dostanbek Tashbulatov v Gage Brymer | 2-6,2-6 |
| ITF - M15 Monastir | 2021/08/15 09:30 | Dostanbek Tashbulatov v Chanchai Sookton-Eng | 6-7,2-6 |
| ITF - M15 Telavi | 2021/08/06 06:20 | Dostanbek Tashbulatov v Yan Bondarevskiy | 1-6,1-6 |
| ITF - M15 Telavi | 2021/08/05 06:30 | Simon A Ivanov v Dostanbek Tashbulatov | 6-4,4-6,2-6 |
| ITF - M15 Telavi | 2021/08/03 05:35 | Dostanbek Tashbulatov v Alibek Kachmazov | 6-1,6-2 |
| ITF - M25 Telavi | 2021/07/30 07:50 | Dostanbek Tashbulatov v Yanki Erel | 3-6,2-6 |
| Challenger - Nur-Sultan | 2021/07/20 04:00 | Dostanbek Tashbulatov v Ivan Nedelko | 3-6,2-6 |
| Challenger - Nur-Sultan | 2021/07/12 07:00 | Jason Kubler v Dostanbek Tashbulatov | 6-1,6-3 |