Stadium: Grandstand 4 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Porec | 2020/03/11 10:40 | Pawel Juszczak v Colin Sinclair | 6-2,6-4 |
| ITF M25 Wroclaw | 2021/06/27 12:30 | Milos Karol v Pawel Juszczak | 6-7,6-3,10-8 |
| ITF M15 Antalya | 2021/06/22 09:10 | Pawel Juszczak v Andrea Picchione | 3-6,4-6 |
| ITF M15 Antalya | 2021/06/21 07:00 | Pawel Juszczak v Umut Akkoyun | 6-2,6-2 |
| ITF M15 Antalya | 2021/06/20 07:00 | Pawel Juszczak v Franco Roncadelli | 6-2,6-3 |
| ITF M15 Antalya | 2021/06/19 07:30 | Gonzalo Lama v Pawel Juszczak | 6-3,6-4 |
| ITF M15 Antalya | 2021/06/18 07:20 | Matias Zukas v Pawel Juszczak | 7-6,3-6,5-7 |
| ITF M15 Antalya | 2021/06/17 09:10 | Pawel Juszczak v Olexiy Kolisnyk | 5-7,6-4,6-4 |
| ITF M15 Antalya | 2021/06/16 16:05 | Pawel Juszczak v Filip Pieczonka | 6-2,6-4 |
| 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 |
| UTR Pro Tennis Series Bucharest | 2021/05/22 12:30 | Ilya Snitari v Colin Sinclair | 6-4,6-7,6-7 |
| UTR Pro Tennis Series Bucharest | 2021/05/22 07:00 | Colin Sinclair v Simon Beaupain | 6-3,6-4 |
| UTR Pro Tennis Series Bucharest | 2021/05/19 10:00 | Colin Sinclair v Juan Ignacio Galarza | 4-6,2-6 |
| UTR Pro Tennis Series Bucharest | 2021/05/18 10:00 | Colin Sinclair v Tomas Lipovsek Puches | 6-2,5-1 |
| UTR Pro Tennis Series Bucharest | 2021/05/17 12:30 | Nicholas David Ionel v Colin Sinclair | 6-7,4-5 |