Stadium: Court 3 Round: 62 Ground: Clay
| ITF M25 Ueberlingen | 2021/08/16 08:00 | Nikolaj Talimaa v Elias Julian Werner | 6-1,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/10/01 08:00 | Thomas Laurent v Richard Zusman | 6-1,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/09/30 09:30 | Bekkhan Atlangeriev v Richard Zusman | 6-2,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/09/29 13:30 | Alexis Klegou v Richard Zusman | 6-2,5-4 |
| UTR Pro Tennis Series Barcelona | 2021/09/27 08:00 | Xavier Gabarro v Richard Zusman | 3-6,6-6 |
| Challenger Kyiv | 2021/09/07 07:00 | Filip Cristian Jianu v Richard Zusman | 6-4,6-1 |
| ITF M15 Chornomorsk | 2021/08/31 08:45 | Richard Zusman v Dostanbek Tashbulatov | 6-7,5-7 |
| 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 |