| UTR Pro Tennis Series - Mülheim | 2021/09/22 14:00 | Colin Sinclair v Christos Keisidis | 6-3,6-1 |
| UTR Pro Tennis Series - Mülheim | 2021/09/21 08:00 | Colin Sinclair v Artem Podorozhnyi | 5-7,4-6 |
| UTR Pro Tennis Series - Mülheim | 2021/09/20 09:30 | Colin Sinclair v Edison Ambarzumjan | 7-5,5-4 |
| Davis Cup | 2021/09/18 08:15 | Kareem Allaf v Colin Sinclair | 5-7,7-6,4-6 |
| Davis Cup | 2021/09/17 08:50 | Mousa Shanan Zayed v Colin Sinclair | 1-6,0-6 |
| Davis Cup | 2021/09/15 09:20 | Nam Hoang Ly v Colin Sinclair | 4-6,6-4,4-6 |
| ITF - M25 - Eupen | 2021/09/10 10:55 | Colin Sinclair v Facundo Diaz Acosta | 4-6,5-7 |
| ITF - M25 - Eupen | 2021/09/09 09:25 | Gauthier Onclin v Colin Sinclair | 6-2,2-6,4-6 |
| UTR Pro Tennis Series - Mülheim | 2021/09/22 12:30 | Edison Ambarzumjan v Jurriaan Bol | 6-4,2-6,2-6 |
| UTR Pro Tennis Series - Mülheim | 2021/09/20 09:30 | Artem Podorozhnyi v Jurriaan Bol | 7-6,5-3 |
| ITF - M15 - Huy | 2021/08/22 15:50 | Thorsten Sollie v Jurriaan Bol | 3-6,6-2,10-2 |