| UTR Pro Tennis Series - Copenhage | 2021/06/16 12:30 | Dominik Palan v Ludvig Aaes | 6-2,6-4 |
| UTR Pro Tennis Series - Copenhage | 2021/06/15 11:00 | Dominik Palan v Marius Ruzgas | 3-6,4-5 |
| UTR Pro Tennis Series - Copenhage | 2021/06/14 12:30 | Dominik Palan v Philip Hjorth | 6-2,3-6,6-4 |
| UTR Pro Tennis Series - Barcelona | 2021/06/12 10:00 | Antoine Escoffier v Dominik Palan | 6-1,6-4 |
| UTR Pro Tennis Series - Barcelona | 2021/06/11 13:00 | Sergio Martos Gornes v Dominik Palan | 4-6,2-6 |
| UTR Pro Tennis Series - Barcelona | 2021/06/10 08:00 | Yurii Dzhavakian v Dominik Palan | 3-6,4-6 |
| UTR Pro Tennis Series - Barcelona | 2021/06/09 11:00 | Jordi Mas De Ugarte v Dominik Palan | 6-7,1-6 |
| UTR Pro Tennis Series - Barcelona | 2021/06/07 12:30 | Juan P. Cañas García v Dominik Palan | 7-6,7-6 |
| UTR Pro Tennis Series - Copenhage | 2021/06/16 11:00 | Philip Hjorth v Warren Sinius | 6-3,6-5 |
| UTR Pro Tennis Series - Copenhage | 2021/06/14 09:30 | Marius Ruzgas v Warren Sinius | 6-2,6-0 |
| UTR Pro Tennis Series - Bucarest | 2021/06/04 11:30 | Warren Sinius v Valentin Vanta | 0-6,2-6 |
| UTR Pro Tennis Series - Bucarest | 2021/06/03 07:30 | Marcelo Zormann v Warren Sinius | 6-0,6-0 |
| UTR Pro Tennis Series - Bucarest | 2021/06/02 12:00 | Ihor Dudun v Warren Sinius | 4-6,0-6 |
| UTR Pro Tennis Series - Bucarest | 2021/05/30 13:00 | Mihai Razvan Marinescu v Warren Sinius | 6-4,6-1 |
| ITF M15 Marbella | 2021/05/23 12:30 | Jose Dominguez Alonso v Warren Sinius | 6-2,2-6,10-6 |
| UTR Pro Tennis Series - Barcelona | 2021/05/01 11:00 | Warren Sinius v Fermin Calvo Barcelo | 0-6,0-5 |