Stadium: Court 3 Round: 25 Ground: Clay
| ITF M25 Koksijde | 2021/08/19 10:30 | Raphael Collignon v Laurent Lokoli | 3-6,4-6 |
| ITF M25 Koksijde | 2021/08/17 08:00 | Raphael Collignon v Pedro Araujo | 6-3,6-2 |
| ITF M25 Frankfurt am Main | 2021/08/09 15:40 | Giovanni Oradini v Raphael Collignon | 6-1,6-4 |
| ITF M15 Esch/Alzette | 2021/07/21 13:00 | Raphael Collignon v Tommaso Compagnucci | 1-6,4-6 |
| ITF M15 Esch/Alzette | 2021/07/20 09:00 | Mats Rosenkranz v Raphael Collignon | 3-6,2-6 |
| ITF M15 Esch/Alzette | 2021/07/19 11:05 | Raphael Collignon v Bradley Paliska | 6-7,6-4,11-9 |
| ITF M15 Esch/Alzette | 2021/07/18 08:00 | Raphael Collignon v Marcel Marlon Sudzum | 6-4,6-4 |
| ITF M25 Marburg | 2021/07/06 15:00 | Milan Welte v Raphael Collignon | 7-6,6-3 |
| UTR Pro Tennis Series Portoroz | 2021/08/21 09:30 | Oleksandr Bielinskyi v Colin Sinclair | 3-6,3-4 |
| UTR Pro Tennis Series Portoroz | 2021/08/20 11:00 | Colin Sinclair v Tilen Zitnik | 6-3,6-1 |
| UTR Pro Tennis Series Portoroz | 2021/08/19 15:30 | Colin Sinclair v Aleksa Pisaric | 6-3,5-2 |
| UTR Pro Tennis Series Portoroz | 2021/08/18 12:30 | Yanais Laurent v Colin Sinclair | 5-7,5-7 |
| UTR Pro Tennis Series Portoroz | 2021/08/17 11:00 | Jan Vehovec v Colin Sinclair | 2-6,1-5 |
| ITF M15 Sofia | 2021/07/06 09:50 | Colin Sinclair v Dragos Nicolae Madaras | 3-6,2-6 |
| ITF M25 Belgrade | 2021/06/30 07:00 | Colin Sinclair v Edoardo Eremin | 2-6,1-6 |
| UTR Pro Tennis Series Bucharest | 2021/05/23 07:00 | Nicolae Frunza v Colin Sinclair | 5-6 |